Toolbit Development 1

Рет қаралды 250,645

Күн бұрын

Well this was supposed to be a quick video showing grinding and honing of two types of high speed tool bits. I managed to squirt one out in thirty plus minutes. In this installment we grind a right hand lathe turning tool and test it at different stages of its development. Some grinding, some honing, some turning and some more grinding.

Пікірлер: 292

@charltoncarswell9977 7 жыл бұрын

Thank you so much for giving back to the field and to the hobby. As a "greenhorn", I certainly appreciate your time, effort and experience!!

@m35a2bobber 7 жыл бұрын

I would recommend this video to anyone wanting to learn toolbit grinding. Great video. Keep making chips.

@oxtoolco 7 жыл бұрын

Thanks for the comment. Cheers, Tom

@martybadboy 4 ай бұрын

Watching old Tom videos in 2024 for fun. Youve taught me much, starting with your book when it was new. Thanks, Mr Wizard!

@ibrich42222 10 жыл бұрын

I just found your channel a week or so ago and it is a wealth on useful information. Most videos on toolbit sharpening spend too much time talking about angles and theory. I liked the fact that you created a toolbit and then used it in your lathe. Real life turning not just theory. Looking forward to the flycutter portion. Inserts are great but HSS will always have place in my toolbox. Thanks, Rich

@danmoreton1788 6 жыл бұрын

Nice video. I am new to lathe/milling operations and it good to see the mechanics of tool development and the corresponding impact of speed and feed operation on the finished product. thank you!

@callingcar51 10 ай бұрын

This is a great lesson. Im a newbie and just started grinding bits. So this helped me fill a lot of knowledge gaps that other videos did not. Thanks!!!!

@vanguardcycle 10 жыл бұрын

thanks for the simple to follow instructions Tom! i learned the importance of a chipbreaker grind last year turning some 4140 when a nice long stringer caught me and split my knuckle to the bone. this video will definitely help improve my work so thanks

@gleonard1850 10 жыл бұрын

A big THANK YOU for taking the time to share all your years of hard learned experience, you save the average home machinist countless hours of learning the hard way. AGAIN THANK YOU

@oxtoolco 10 жыл бұрын

Hi G, Thanks for the nice comment. Its nice to hear folks appreciate the effort, All the best, Tom

@charlesbrewer6552 9 жыл бұрын

I know this video has been up for a while and I have subscribed to your site for a while , but I have just come across it and it has filled in SO many missing links in my knowledge. Thank you for taking the time to make these videos. They are so helpful to home machinists. A very helpful video, thank you

@oxtoolco 9 жыл бұрын

Hi Charles, Glad you found something useful. This is all the stuff the books leave out. Thanks for the comment. Cheers, Tom

@Leadingedgeindustrial 7 жыл бұрын

I really enjoyed watching this video. I wasn't trained as a tool maker but have been machining for 20 years. I am now starting to learn the art of making tools and wish I had been taught this many years ago. We really enjoy your videos here at the shop and thank you for making them and sharing your knowledge.

@oxtoolco 7 жыл бұрын

Hi Lead, Thanks for the comment. Cheers, Tom

@andrewholecek5256 9 жыл бұрын

Finally A video that shows the results as the cutter is being ground. I found your channel and am now a happy camper due to the way you explain and demonstrate. I especially appreciate you replying to everyone's comments. Keep up the good work.

@oxtoolco 9 жыл бұрын

Hi Andrew, Glad you like the toolbit series. Thanks for the comment. Cheers, Tom

@zippy308 10 жыл бұрын

This is a great video and the first I have seen of yours. You have great camera angles and very good explanations of what you are doing and what you hope to accomplish. I am anxious to watch your other 95 videos and hope they are just as good. Nice work Tom!!!!

@joefabitz8514 10 жыл бұрын

Ground my first lathe bit after watching several other videos. This one demystified it for me. I followed your very simple instructions in this video and started cutting beautiful smooth steel on the first try on my old Shoptask. Thank you!!!!!

@oxtoolco 10 жыл бұрын

Hi Joe, Thanks for the comment. I find too much talk about the angles and their names are not helpful to beginners until they have ground a couple of bits. Glad you had a good result with your own ground tool. Cheers, Tom

@oxtoolco 10 жыл бұрын

Hi Adam, Can't wait to see your next video. You are so smooth on the lathe its a pleasure to watch. Best, Tom

@Abom79 10 жыл бұрын

I seem to have my own style of tool grinding, not that its any different than anyone else, but I have my own favorite tools and grinds that I use on the daily basis, most of which I picked up from my dad. I rarely use the positive lead angle approach, mine is usually set to turn to a square shoulder. I thought it might be of help to share with what I learned and how I grind my chip breakers. Im going to add it to my list of videos to make. BTW, I'll be posting up a large lathe work video soon.

@larrycainis 10 жыл бұрын

Great video Tom. I enjoyed the fact you showed how minor changes like honing can make amazing changes. I have discovered from using HSS inserts when the finish starts to get rough or erratic a quick pass on a vermiculite stone brings back the original performance. Keep up the great work Thanks Scot

@johnambler3107 7 жыл бұрын

Great video Tom, you have sparked my interest and I'm going to have ago at grinding my tool bits now. Thanks John

@oxtoolco 7 жыл бұрын

Hey John, Go for it. Its important to understand how tool geometry relates to the cutting action. Thanks for the comment. Cheers, Tom

@ChrisJB84 10 жыл бұрын

Thank you for the video! I just discovered your channel last week or so. Great channel and I am enjoying your videos!!

@Bestcabinetmaker 10 жыл бұрын

Tom, great demonstration! Just what I needed. Thanks, Larry

@emonikino 10 жыл бұрын

This video explains the inconsistent finish quality. This is priceless for a beginner like me. Thank you so much.

@oxtoolco 10 жыл бұрын

Hi Jeffrey, Glad you had some success. Thanks for the comment and participation. Cheers, Tom

@StevoJN 7 жыл бұрын

Cool video man! Really good idea of showing the differences between the stages of grinding/honing. This is an art form that few and fewer people seem to know these days so thanks for taking the time to share your knowledge, I will pass on what I have learned here today I promise, my apprentices will appreciate this, as do I :)

@oxtoolco 7 жыл бұрын

Hi Steve, Thanks for the comment. Cheers, Tom

@oxtoolco 10 жыл бұрын

Hi Adam, Thanks for the nice comment. I would really like to see you do a toolbit video also. In all the shops I worked in everybody had their own tricks for making good toolbits. I think you could do a great one and show some of the features you like to see in lathe tools. Yeah the Noga holder is working good. My camera is getting oily! Regards, Tom

@MrJugsstein 7 жыл бұрын

Tom back watching some of your older videos. Good stuff geat demo, also interesting to see how you have devoliped as a presenter. still a joy. thanks really enjoy hearing your thought process. I always am interested in the why. not just push it up against the wheel. thanks Will

@oxtoolco 7 жыл бұрын

Hi Will, Thanks for the nice comment. Cheers, Tom

@oxtoolco 10 жыл бұрын

Hi John, Thanks for the kind words. Looking forward to the next project in your shop. Did you sort your camera issues? Regards, Tom

@daveys 2 жыл бұрын

Thanks for the video. I’ve just started making my own HSS tools and I really enjoy it. I’m no good at it yet but I am having fun!

@Dreamcutter 9 жыл бұрын

Great tool grinding techniques. I like how you presented your lesson. Thanks for sharing.

@oxtoolco 9 жыл бұрын

Hi Cutter, Thanks for the comment and compliment. Cheers, Tom

@oxtoolco 10 жыл бұрын

Hi Lawrence, Thats a great idea! I'm going to try that out right away because I just picked up a nice corded Dremel for ten bucks. Thanks for the great idea. Do you just use the thin cutting discs or the diamond type? Best, Tom

@johnscott7269 9 жыл бұрын

thanks for your time and knowledge you so freely give.

@oxtoolco 9 жыл бұрын

Hi John, Thanks for the nice comment. All the best, Tom

@oxtoolco 10 жыл бұрын

Hi Dan, Excellent questions. The reason I lifted the tool was to get onto the more curved part of the wheel if that makes sense. I was holding the bit at a compound angle to do the top rake of the bit. So I tipped the right hand side of the tool in toward the spindle and down toward the tool rest. Its also easier to feel when you engage with the wheel if you are making full contact with the previous grind. Its water with a little soluble oil. Best, Tom

@EnergyFabricator 10 жыл бұрын

Now THAT is a tool bit collection! The honing really makes a difference to the surface finish.... Just a few more of these videos and I should be capable of using my own hobby lathe :)

@billdlv 10 жыл бұрын

Thanks Tom that makes sense with the DRO, I never have used one on a lathe. I should have been more specific in my question, I was wondering about the tool rest on the grinder. Thanks, Bill.

@oxtoolco 10 жыл бұрын

Hi Keith, Its a dual grit bench stone made by Norton. Its similar to McMaster 4506A5. I think it came from MSC or J&L tools. The fine side is something like 320 and the coarse side is a little too rough for most things. Glad to hear you put something you saw to use in the shop. That kind of stuff makes my day. Thanks for the comment. Regards, Tom

@oxtoolco 10 жыл бұрын

Hi Fred, I don't think I honed the top surface after the chip breaker was put in. The reason is if that surface is honed after it can very easily be damaged since its a fine edge. I lead with the cutting edge as you say but many people go the opposite. I bought the maps at a local voodoo shop. What city were you in again? Looks like I need to stick another couple of pins there. Regards, Tom

@Abom79 10 жыл бұрын

Ok Tom, I started watching the video this morning when I was getting ready for work, but I had to wait untill my 13 hour work day was finished to finish watching the rest. Good info on the tool grinding and honing, I enjoyed it. I have to say, I was planning on making a similar video myself, and hope you dont mind if I do so some time later. BTW, I noticed that NOGA holder is helping you get more closer to the action!!

@RG635csi 10 жыл бұрын

Hi Tom, today I practiced your tool grinding techniques and I am astonished about the result. The cuttingsound was smooth and I meet had so many curls when cutting so now I need to make the chip breaker. I have been facing off a 5 inch diameter disc and it was peanuts. Thanks for the great video. Regards, Ritchie

@oxtoolco 10 жыл бұрын

Hi Chippie, Glad you had a good outcome. This is the stainless steel you were machining correct? Thanks for the comment. Best, Tom

@chrisgrover8888 5 жыл бұрын

Thank you for making the video, helps a lot

@PacoOtis 8 жыл бұрын

Wow! Well done! You are a really good teacher. Thanks!

@oxtoolco 8 жыл бұрын

+Joseph Stokes Hi Joseph, Thanks for the comment. Cheers, Tom

@hans-petersavage3506 10 жыл бұрын

Very good video. It helped me to understand the basics.

@oxtoolco 10 жыл бұрын

Hi HP, Thanks for the comment. More toolbit stuff coming out soon. Stay tuned. Cheers, Tom

@daki222000 10 жыл бұрын

best made simple video on the subject.thanks. When you grind the chipbreaker, do you grind it all the way to the cutting edge (thus dramatically increasing the rake angle)? or do you leave a tiny flat at the cutting edge to prevent the cutting edge to keep the edge from dulling too fast? it was hard to see if there was a tiny little sharpie line left on the cutting edge.

@oxtoolco 10 жыл бұрын

Hi Hal, That's a good way to grind a small feature like a chipbreaker. I'm going to get a couple of finer harder wheels for my small bench grinder and get back in practice. Lawrence suggested a Dremel with a small cutoff wheel which I tried and it works well. Regards, Tom

@oxtoolco 10 жыл бұрын

Hi fgleich, Another viewer suggested the very same idea. I tried it myself and it seems like a way to put in a very small narrow chipbreaker that would work well for light depth of cuts and slow feedrates. Thanks for the comment. Regards, Tom

@DrTimmay 7 жыл бұрын

Heya Tom! Thanks for the clear demonstrations of each step. One thing I'm running into when turning 6061 is welding, i.e. the aluminum begins to adhere to and build up on the cutting edge. Any tips on dealing with that?

@zews1 10 жыл бұрын

Thanks for the great tutorial! I use an EZE-LAP diamond stone to hone my high speed cutting bits after grinding. Additionally I polish (lap) them with various other tools to get a nice finish. Most of what I machine on my very small TOS tool makers lathe, is 303 stainless, and precious metals. I never had much need for a chip breaker, and I am going to give this a try the next time I need to grind a new cutting bit.

@oxtoolco 10 жыл бұрын

Hi Zews, I like the diamond laps myself. I deliberately tried to keep the tool bit video as low a tool investment as possible. There are some wonderful diamond products out there at really reasonable prices. As you say everybody should have some diamond tooling in their box. I wonder what the chip breaker for gold and platinum look like. I'd be willing to run some tests for you....... Cheers, Tom

@oxtoolco 10 жыл бұрын

Hi Scot, As you said once you have a good tool its pretty easy to maintain it with some light honing or built up edge removal. Thanks for the comment. Best, Tom

@matthewcorcoran4562 5 жыл бұрын

Haven't finished watching this yet, but i thought id say that i normally skip honing stones and just give my tools a lick on the balder buffing wheel before I use them and it does essentially the same thing, leaves a nice finish at least with aluminum. Its something I started doing years back with wood carving chisels and the cutters I used on my old wood lathe and I've just carried the practice over in my shop for metal work. And if you find yourself up in humboldt county sometime, stop by. Be cool to meet you and talk shop one of these days.

@holmes230536 8 жыл бұрын

Excellent description on grinding hss toolbits, I particularly like your comment at 13 min about wide range of angles that will work, I also like that you place the toolbit flat on the table and let the radius of the wheel produce the back rake, much easier to regrind when its time,

@oxtoolco 8 жыл бұрын

+Walter Maisey Hi Walter, Thanks for the comment. Cheers, Tom

@oxtoolco 10 жыл бұрын

Hi rhost, The chip breaker does go all the way to the edge. Its rather large for fine depth of cuts so that is part of the reason it performed poorly on the light cuts. The feedrate was the variable with the most effect on the chips breaking with the setup I showed. Thanks for the comment. Best, Tom

@tylercunningham3275 10 жыл бұрын

Thanks, I am not sure how to comment on your blog but that is one of the coolest lathes I've ever seen. Between its ergonomic three speed tail-stock and the infinitely variable rpm it is a well featured machine. You would be crazy not to be it home Tom.

@oxtoolco 10 жыл бұрын

Hi Annoy, Not sure what you mean "away" from the edge. I push the tool in the direction that would make it cut. In other words the same direction the material would flow into the edge in question. Does that make sense? I think I might have said something like how you sharpen a knife in the video. I don't think it matters too much which is probably why I didn't blather on about it. Thanks for the comment. Best, Tom

@fgleich 10 жыл бұрын

Hi Tom, great vid ! Have you tried using a dremel tool with a fine cutoff disk to form the chip breaker ? I'm really curious as to if that would work or not.

@tristanpatterson3843 8 жыл бұрын

Very informative. I feel It's one of those things that can be theorised reasonably easily but perfected via trial and error. I cant wait to try. Oh, and to all the comments about the danger of hands in the chips, obviously he's been doing It for years and still has all his fingers. I'll be damn sure to stay away until I naturally feel attuned to my task just like any trade.

@oxtoolco 8 жыл бұрын

+Tristan Patterson Hi Tristan, Thanks for the comment. cheers, Tom

@hugofournier3249 7 жыл бұрын

Tristan Patterson

@oxtoolco 10 жыл бұрын

Hi Straighthread, The stone on the left side is Aluminum oxide run of the mill bench grinder wheel. Probably 46 grit. The right hand one is Silicon Carbide, also fairly coarse. You don't need super fine wheels for most tool bit work in particular if you hand hone. Fine grit wheels are nice for holding form and sharp corners like you would need for detail work like chipbreakers. Regards, Tom

@oxtoolco 10 жыл бұрын

Hi Jack, You are right. I generally grind my chipbreakers on my Deckel. The small diameter fine diamond wheel is the killer tool. Not everybody has that so I did it the lowest equipment investment method. I'm glad I got the point across. Best, Tom

@oxtoolco 10 жыл бұрын

Hi Tyler, Great question. First I would have ground the chip breaker differently for steel to make it stronger. For the same basic tool in steel I would have run it at 250-300 rpm and the heavier feed rate on the 1.5 (50mm) diameter. Regards, Tom

@oxtoolco 10 жыл бұрын

Hi Sharg, I showed and insert similar to what you mention in another video. Several viewers requested a video showing honing and preparation in more detail. I also like the diamond hones for touching up tools for the same reason you mention. I wanted to show the lowest level of tooling investment needed to make good cutting tools. Thanks for your comment. Regards, Tom

@oxtoolco 10 жыл бұрын

Hi Steve, They are all interconnected. Surface speed, feed rate and tool geometry. Of all of the factors feed rate has the most effect on chip breaker performance. Best, Tom

@keithm5906 10 жыл бұрын

Tom could you share what grit you are using to hone and if the stone is something special or just a decent stone? Loved the video and used the information just tonight and what a better cut!! Thanks bunches Keith

@billdlv 10 жыл бұрын

Tom that was really good I'm going to have to watch it again to catch all the info. The tool bits I've ground have been with smaller stock (1/4 inch) which makes it hard to see and get the geometry right. I'm going to see if I can get some larger tool bit stock to grind. Honing really seems to make a big difference too I'm going to try that as well. What angle is your tool rest at it looks like 90? Thanks again for the vid!

@ralphpavero7760 Жыл бұрын

Thank you for explaining it was very helpful

@oxtoolco 10 жыл бұрын

Hi Chris, Another good point. In fact in this video I moved the leading cutting edge over after I ground the chip breaker. The wheels on my grinder have big corners so I was having a little trouble making a tight little chipbreaker. But I also really wanted to use the bench grinder and the lowest equipment investment tools. Best, Tom

@oxtoolco 10 жыл бұрын

Hi Flip, I took the chipbreaker all the way to the leading edge. It is very high positive cutting angle. The chip breaker is rather large which is somewhat realistic hand grinding on an average bench grinder. To make really fine chipbreakers you need a fine narrow wheel with a tight crisp dressing. Best, Tom

@slavikmarinovski2249 4 жыл бұрын

Thank you for your video! Ive had a very difficult experience breaking chips with CNC turning internal diameter aluminum with vcgt inserts on a 4" long part to a tolerance of 0.0006". had to add 3 stops on 3 different boring bars to manually clear the chips cause it can make trouble with the ATC. wonder if there is a good solution to it? of course with this fine tolerance and long thin boring bar you cant push the part to break the chip and are left with long stringy chips. the ap is only about 0.01" on diameter for the finish cut. ive tried to decrease it to 0.004 and no luck there too (trying to make dust like and have coolant wash it off). would love to hear your take on this matter. thanks!

@paulschoen4901 10 жыл бұрын

Nice video. I hadn't planned to watch the whole thing, but you kept it interesting with the comparison of various tool geometries as well as feed rates and depth of cut. I liked your demonstration of the chip breaker groove. However, I think that makes the tool suitable only for turning, and you would need the groove on the other cutting edge for facing. I sometimes use diamond files to touch up my tool bits, particularly carbide, and I use a 5x binocular magnifier. Thanks for the tips.

@oxtoolco 10 жыл бұрын

Hi Paul, Thanks for the comment and compliment. Indeed you can face with this tool as well. It will perform better at turning for sure but it will face as well. I have several of the diamond honing files and love them. I just keep cleaning them and they just keep lasting forever. Cheers, Tom

@GglSux 7 жыл бұрын

Thanks for a great video. Best regards

@lilflatty2472 6 жыл бұрын

GAAHHHH THANK YOU FOR EXPLAINING THE RIGHT AND LEFT IDENTIFICATION. IM KINDA NEW TO MACHINING AND JUST BOUGHT MY FIRST LATHE ABOUT A MONTH OR SO AGO AND HAVE BEEN REALLY CONFUSED ON WHY THEY CALL A TOOL THAT FACES LEFT A RIGHTY AND A RIGHT FACING TOOL A LEFTY.

@oxtoolco 10 жыл бұрын

Hi Tom, Low carbon steel and in particular hot rolled is difficult to get a really nice finish on. My advice is use a nose radius and take a depth of cut radially that is equal to the nose radius or greater as a minimum cut. The hard thing is to take a really light cut and get a super finish on hot rolled steel. Regards, Tom

@oxtoolco 10 жыл бұрын

Hi Bill, I generally keep my toolpost at 90 degrees to the axes for everything. It is probably a habit from using DRO's on lathes for so long where you might have to retain five or six tool offsets. Moving the post around all the time monkeys with keeping tools calibrated. Regards, Tom

@stxrynn 8 жыл бұрын

I just ground a HSS tool today, and the finish in 1018 was rough. My feeds are limited on the old Logan. I didn't want to go to a tangential shear tool for finish. I'll go stone the new bit and try it again. Thanks TL!!!!

@oxtoolco 8 жыл бұрын

+stxrynn Hey Let us know how it works out. 1018 is a pain to get a super nice finish on sometimes. Thanks for the comment. Cheers, Tom

@76djr 9 жыл бұрын

I like your angled toolholder shelf on top of the lathe.

@oxtoolco 9 жыл бұрын

Hi Dave, Thanks for the comment. In one video I do a survey of it so you can see it a little closer. Cheers, Tom

@NSTRAPPERHUNTER 9 жыл бұрын

Nice demo and thanks for sharing.

@oxtoolco 9 жыл бұрын

Hey Hunter, Thanks for the comment. Cheers, Tom

@bulletproofpepper2 10 жыл бұрын

this video is going in to my library and will be shared with all how ask. great awesome video. watched it 10 times

@oxtoolco 10 жыл бұрын

Hi Sam, Thanks for the nice comment. This has been a really popular video. All the best, Tom

@bulletproofpepper2 10 жыл бұрын

I'm try to get the word out on ,"the safety of chip brakers and truly sharp tools."

@tylercunningham3275 10 жыл бұрын

Wonderful video, High Speed Steel can be very frustrating. What rpm and feed rate would you use on steel with this same tool bit?

@jameswilson3667 9 жыл бұрын

excellent video.thanks for sharing your knowledge

@oxtoolco 9 жыл бұрын

Hi James, Thanks for taking the time to support the channel and comment. Cheers, Tom

@jameswilson3667 9 жыл бұрын

oxtoolco I have new respect for that 80 yr old shoe box of hss cutters that used to belong to my great grandfather. It looks like I've inherited his "bread and butter" as you put it. So many different styles and shapes - all hand ground - and he left them all perfectly sharp for me! Picked up a small combo machine over the weekend and started to learn. I was debating whether to use his HSS cutters and learn the nuances of grinding, or to purchase an entry level carbide tool holder. I'm going to use the HSS. think it will make me a better machinist in the long run.

@mikeadrover5173 9 жыл бұрын

As always, thanks’ for taking the time to make this video! And I support this site. ~M~

@oxtoolco 9 жыл бұрын

Mike A Drover Hi Mike, Thanks for the support. Digging around in the archives I see. All the best, Tom

@oxtoolco 10 жыл бұрын

Hi Chris, Great points. There is way to much weight is given to specific tool angles and geometries. The bottom line is a large range of configurations work. Take a look in a really old machining handbook at check out some wacky looking forged tools. In the olden days (when you were a lad) a blacksmith was an important guy in the machine shop. Many tools were forged and heat treated right on the shop floor. Regards, Tom

@bigman6168 9 жыл бұрын

I have watched a lot of video about large radius nose tools. They seem to work really good. Do you know what is the best large radius nose tool that give a very good finish? Thank you so much!!

@M1028Man 10 жыл бұрын

Excellent tutorial!

@laurentcnc6662 10 жыл бұрын

An other great video Tom ! Thanks.

@wayneriedlinger 6 жыл бұрын

Good vid and informative. I see you use grey stones on your grinder and you can grind for a while before the bit gets to hot. when I grind HSS the bit gets hot quickly so I can only grind for a couple seconds before too hot to hold. would a courser stone be better. I always read that a blue or white stone is the one to use? maybe your stones are better quality then the ones I have.

@johneric3886 4 жыл бұрын

Nice work Mr. Oxtools.

@MarianCobirlie Ай бұрын

Thank you for share this important things .

@MrWayneploof 4 жыл бұрын

thanks for the video I think this will help me a lot

@oxtoolco 10 жыл бұрын

Hi Zippy, Thanks for the comment. Regards, Tom

@zod-engineering-welding 6 жыл бұрын

Hello, What grit aluminum oxide grinder wheel will shape a 1/2" square HSS tool bit the fastest?

@tomsemo8186 10 жыл бұрын

Super great info. As a rookie, you took a lot of mystery out of tool bit sharpening. I have rarely honed. Can't believe the difference it makes. Will cutting steal have the same results? I usually cut hot rolled steal and am not often satisfied with the finish. next video maybe a little blackboard theory? great info Tom. tkx, .

@robertmccully2792 7 жыл бұрын

Good video-- explains the missing info in sharpening. What is is the math for speed feed/ length of cut-- you keep referring to.

@robertohngemach5796 4 жыл бұрын

Great Video thank's for you help

@douglaswhite9095 7 жыл бұрын

Tom I been watching your videos for some time now so I decided to subscribe what type of wheel should I use on my bench grinder for high speed steel also stone for honing tool bit I really enjoy your videos

@ivandsouza6064 8 жыл бұрын

Very nice I enjoyed it

@fstarockaburns425 3 жыл бұрын

hi thanks for the vid -im struggling to get a mirror finish on aluminum on my old southbend 9 - possible my motor is worn? ive been trying using the back gear for more torque, tends to labor even on light cuts! really frustrating!

@yashmanwani6232 9 жыл бұрын

Thanks a lot. I am wondering how much time and materials nice people like you donate in making these videos. I have been learning a lot about machining because of great people like you. Thanks a ton sir!!

@oxtoolco 9 жыл бұрын

Hi Yash, Good questions. I spend around something like 20 hours per week to produce and post the video content I put up. As far as materials it depends on the subject matter. Most of the tools I already have but I do spend some on raw materials and consumables that adds up over a year. Thanks for asking a great question. All the best, Tom

@crossthreadaeroindustries8554 6 жыл бұрын

Really great, onto part deux.

@imanoleonardo6902 10 жыл бұрын

Hey Tom another great Video, on making a chip breaker how about cutting it with a thin cut off wheel in die grinder, I find it's easier and creates a sharper edge for the chip breaker. The tool bit is held in the vice does not get hot and I have more control with a die grinder. Hal

@ShuffleSk8Ter 10 жыл бұрын

Hi Tom!...all depends but for just a chip breaker the small cutoff wheel works great much more control in how you want it positioned etc...I do use small blue wheels too...

@dustinwolfe9591 4 жыл бұрын

Like the video. Informative. I think you might want to rethink the suggestion of grinding it "uphill" however due to the possibility of the hss becoming a projectile.

@dizzolve 6 жыл бұрын

how hot is too hot? Can you grind so much before quenching that you change temper the bit or would it be so hot you wouldn't be able to hold it by that point? Is it a concern at all

@StraightThread 10 жыл бұрын

Hi Tom, What kind of a stones are you using on your grinder?

@oxtoolco 10 жыл бұрын

Hi Fadt, Most of the holders I've seen for inserts that have that much relief are flat also. That is horizontal to the machine center line. You could put some angle in the pocket to create some rake but I would not do it. If you get non flat top inserts that already have a positive geometry they may not perform at all. Stick with what the manufacturers are doing as they invest lots of time and money to get their tools to work. Hope that helps. Regards, Tom

@morelenmir 5 жыл бұрын

I am fascinated by the process of grinding one's own tools. It seems like an absolutely essential and entry-level skill for anyone who wants to get in to metal-work handicrafts on a lathe, especially as an amateur or hobbyist. 'thisoldtony' also has an excellent video on the same topic and when combined with this, slightly more in-depth study the two give a very comprehensive grounding on the techniques required. One aspect that occurs to me is--don't the blocks of tool steel get hot while you are grinding them?

@ROCKMOREDESIGN 9 жыл бұрын

Hey Tom I got my first lathe delivered yesterday a BV20-1L. I've never used a machine lathe before, just a little time on a wood lathe in 8th grade. The last week I've been watching your tool development 1-2 and 3. I got all HSS blanks with a sharp edge from the factory and after the first cut which was a little crappy I took it off, honed it and gave the front leading edge a little radius on the stone and what do you know, much better just like your video, but like you said we can still do better. That's buddy, saved me a lot of trouble from the first 2 minutes on the new machine.

@oxtoolco 9 жыл бұрын

ROCKMOREDESIGN Hi Rock, Glad you liked that one. Congratulations on your new lathe. Its always fun to get a new machine tool. Thanks for the comment. Cheers, Tom

@ROCKMOREDESIGN 9 жыл бұрын

Tom I have to bore a perfect 22mm hole in the side of a 30mm 6061 rod. The hole is to be used as a clamp to hold another 22mm tube. I bored a 21mm hole and found out quickly that an adjustable reamer is not designed to enlarge a hole, just smooth it out. My next move is to bore the 21mm hole and use a 22mm end mill mounted in my lathe chuck to enlarge the hole. I made a clamp with taped holes to attach my work piece to the saddle and move it into the drill. Worked perfect to bore the 21mm hole. The question is will it work to bore out the hole to 22mm with the end mill.. I Thanks for the advice, my HSS radius lathe tools work well already, but as you said we can do better. Here is the Facebook page with the 1st rough part. facebook.com/mike.rockmore.3