Max, your bits of "useless information" are pure gold.

Thanks Max for the informative video. Your lathe cut thread at the end of the video looks perfect.

Want thank you for all the knowledge your passing on 👍

Thanks Max. Enjoyed and learned something new.

Far out Max! G'day mate and thoroughly enjoyed this one, always always learn something watching you 👍

When I was training in mid 70's, instructor always made a real big deal about working out helix angle. As usual, we 'kids' (18-20) didn't pay enough attention. I had to make a 1" Whitworth thread, helix angle suddenly became 'quite important' as thread depth allowed tool to interfere with sides. Was almost finished when half nuts disengaged, destroyed thread when it took 0.100" cut. (it was a very old worn machine, mainly kept to force people to pay attention, I had previously made 'hundreds' of 0.060"dai, 0.300" long stainless steel rivets for Vic's hobby of clock making ) Vic would go a bit crazy if we ran machine backwards instead of disengaging half nuts, had to use thread dial on all Imperial threads. I've always had a problem with compound angles so trial and error for me as well.😉

Very good T & C tutorial, Max. Thanks.

Hercus 👍👍👍 good one Max 💪💪💪 🇦🇺

Very nicely made Max, edit, I removed my stupid question lol, I really am losing my mind. Cheers, Jon

Very informative. Thanks Max 👍😎👍

Excellent tutorial Max. I saved the video for future reference. Thanks for bringing us along.

Very informative video Max. Thanks for all the tips you're a wealth of knowledge.

Thanks for the informative video on how valuable it is to know about basic tool grinding and Using it in real world matching jobs. Most people want to buy the most correct tool they can find and when it needs touching up they throw it away and get another. You always have very informative and interesting projects keep it up I know it is a lot of work for you to put these out but thanks again ed

Very interesting and informative. Thanks for sharing.. I learned and enjoyed

very good video friend MAX..thanks for your time

Hi Max. Thanks for having me along. I really enjoy the learning chance at various fitter task. M.

Excellent video Max.

Great informative video once again Max. Enjoyed watching. Cheers Tony

thanks for sharing max. cheers ben.

*_Really good work there. Didn't even chatter. Looks like it cut really smooth. I need to eventually get one of those tool grinders._* 😎👣

Good video Max both in explanation and production. BC

A really great oid school lesson in tool grinding precision. Thanks Max, enjoyed it thoroughly.

More ‘useless’ information would be helpful to me Max. I’m just at the very beginning and your tips and insights are very helpful mate.

Thanks Max, Great tip about grinding tools for the old style tool holders, got several of them I want to try. Cheers

Max is Back, and has interred into The Swan Valley Machine Shop as a first class toolmaker machinist. I like those shields that you are making for the grinder, and although the wheels very seldom fly apart and put out both of your eyes you are taking all the necessary precautions not only for your own safety but showing the world the right way to do the job, thanks. Thanks for showing how to make a precision thread cutter the right way. And getting your lawn mowed for free, no snakes, no problems, I did see the HBM standing at attention waiting patiently for the year 2024 to come rolling in, so the master can start addressing those ways, and all the broken and bent and missing bits and pieces.

Cuts like a brand new file max, always learn something from your videos, keep'um coming...

Nice tip on the use of the phone Max.

Given the Hercus brand catered mainly to the education sector, that poor old Hercus grinder has probably spent it's entire life making threading tools. I recall making a square threading tool when I was an apprentice on the same machine. What ever happened to Hercus? There used to be a Chinese company making machines and the local importer had them branded as Herless. No doubt trading on the similar name.

Loved it well explained Max cheers.

Most tool an cutter grinders I've used have a reversible spindle switch for whilst using other side of the wheel 👍🍻

Enjoyed the vid.. Thx Max.

Another awesome video young max, thank you for you willingness to share your wealth of knowledge with the rest of the world. From the kiwi

G'day Max. Excellent tuition on what to sharpen & how. Slow process, but a good result. Well done, catch you on Your next venture. 🎉 😊

Another top video, thanks mate. Refreshed the tool sharpening up in the grey matter. Have a good one 👍🇦🇺

Thanks for the educational video

Thanks for a very informative video!

There is always something to be picked out of your video, thank you.

Good project 🎉

Well done. Tool grinder is paying for itself fast. 👍🏻

Excellent.

Hi Max, I have an Ifanger threading tool with 55 and 60 degree HSS inserts, certainly a handy tool for finer threads. I use mainly carbide threading inserts now. Offhand grinding HSS is becoming a lost art with the multitude of inserts available I think. Back in the late sixties used to watch the machinists offhand grind HSS toolforms, true craftsmanship. They wouldnt let anyone near their grinders!

Awsome love your work

Thanks for sharing, you useless information but it makes perfect sense when you see it in the video. Steve summers just showed a grinding fixture that may be easily made.

Another killer video, Max. Thanks, I learned a bunch.

100 % agree on grinding wheel guarding, doesn't take much for then to explode, even when used properly, many don't realise the portable hand tool discs are flexible, not so on machine tools, though some slitting wheels can be. 10 & 14" metallurgical sectioning wheels are certainly not flexible . Great job Max, brilliant design of that cupped wheel. Thanks for sharing

Your full of information Max none of it is uselless. Thanks for sharing mate

Enjoyed

Put a reverse rotation switch on the motor! Mike

Gday Max, definitely learnt a lot and definitely no useless information, compound angles can sneak in everywhere and my brain don’t have any mathematical components that’s for sure, great video mate, cheers

Thanks max

👍

Good info on the grinding Max. You may want the check with your electrician and see if you can wire up a drum switch so you can change the rotation of the grinder motor. On some this can be done. Cheers

Not sure if the tool grinder spindle rotates fast enough for those cutoff disks Max. They tend to like to run over 9,000rpm; I think (with no proof I admit), that if they are running faster, there are internal stresses built up that help the disk to maintain its shape.

Nice trick of angling the tool up in the vice to grind the relief. I use a multi axis vice on mine (home made) so I can set all the angles independently. I never put top rake or back rake on because as far as I understand it changes the geometry of the groove it cuts. I guess you could, but you'd have to do a bunch of 3D trigonometry to get all the angles right.

Hi Max, I would always grind a top rake on my tools, ( Before Sandvik tips), makes for a far better chip form and finish. Best wishes Mal.

Max. Gooday. For the second side ... Could you have flipped the tool over in the vice and inclined it down 15° ?

can't your motor be reversed by different switching? Lots of useful info there Max, Thx👍

👍👌

Great info on tool grinding. If you use a universal grinding fixture and set all the relief and cutting angles at once, would it eliminate the need for the secondary grinding you have done? Thanks again.

I recently bought the 5.16” Diamond holder from Eccentric Engineering. I haven’t got a chance to try it yet. Reminds me of my old Williams and Armstrong holders. But while I bought sone ETM Super Cobalt pieces, I’d really rather use carbide. But no matter where I go I can’t find 5/16” square carbide. Nice job. But I’m wondering why you needed to make that rather than to use carbide thread inserts? I haven’t ground a threading tool in maybe two decades.

No such thing as useless information learner from years of experience Max

I think your useless information is very useful. Good one, Max.

First rate video.

Great video, I’ve a new to me TOS tool & cutter grinder, and this is very helpful for a beginner like me! Thanks. Out of interest could you say what stones you used to deburr and finish the tool? I’m missing those finishing bits and would like to know what to buy..

Could you hold a parallel across the front of the wheel and line the tool up with that? Mike

Very usfull, 😊

Max, when you aligned your vise to the grinder, you used the guard vise the wheel hub. Is that how you do it?

👍 edit: 9/09/23

That M42 is tough to grind

Any reason you left the spindle extension on?

Hi Max are you full time in your own shop now or do you still have your day job

When I did my first year of fitting and machining in 1986 we had to grind tools by hand, if you can’t grind a tool you shouldn’t be using it

When I did my first year of fitting and machining in 1986 we had to grind tools by hand, if you can’t grind a tool you shouldn’t be using it