Karl - very clever design, and simple enough for any fabricator to build!

It’s nice to see that your showing people that anyone can build something from scratch out of junk with simple tools even if you have to borrow a tool to finish it off . Great job thank you

Nice build, very neat and simple! You say you’re not an engineer but there she stands, and she works well. You have great intuition and a very competent set of hands. Those two things are better than any degree in the real world, in my experience.

Love the Macgyver Pullmax! "I'm not an engineer. . ." Actually, you are. Engineering predates university degrees.

You blow me away. Is there anything you can’t do. I was as excited as you while you were building this thing. I love this channel it gives me inspiration for my projects. Keep it up.

Your skill with a torch is incredible and the build of this machine reminds me of stuff that my dad used to make. He loved to fabricate and you have that same passion towards the build.

Thank you for the instruction video on this hammer build. Nice Job! Keep them coming Karl.

Brilliant work, Karl. If you add a coolant feed and catch-tank to your pillar drill your drill bits will last 10 x longer. I use a vibration pump out of a domestic espresso machine - they are very cheap. You have inspired me to build a power hammer now!

Karl, you are such a wonderful person. Sharing your enthusiasm, skill, knowledge with the world -- thank you so much.

I am sooooooo looking forward to attempting a build like this myself. I have a buddy CNC cutting out the bead roller for me right now. So a scrap power hammer sounds like the next tool build for my shop! Thank Carl (JapHands)

Nice work Karl, another machine to build for my workshop. just in case you dont know you can rotate the clutch mechanism on the front of the motor by loosening the bolts that hold the clutch assembly to the motor then you rotate it so you can orientate the lever to suit you foot linkage. Cheers Greg

Built a bead roller modified from your design, not finished yet, want to build a power hammer similar to Steve Shepards Petingal hammer, and a pullmax type machine, lot of work before I can get to a car, but you're an inspiration.

DUDE! You are an inspiration! After taking the class with you and Christian, I was feeling like "how can I justify buying a Pullmax?" (I loved that machine) I now have my answer. Challenge accepted! I'm going to build one! But I will use my lathe!

I really appreciate both that you make the work of metal shaping approachable as well as making the entry to it - by making your own tools - approachable. In your "storytime" segment, you said a number of times about how you were in awe of metal shaping for a long time before you had a chance to take Christian Sosa's class and actually give it a try. I think a lot of people out there are at that point - and many never get past it. I give you a lot of credit for showing people that doing these things are attainable and it is just a matter of making the effort.

Fantastic Job Karl - Thanks for sharing

Thank you thank you thank you!!

When it comes to Fabricating my own Tools and Garden Tractor Attatchments, I have always tried to sketch at least 4 variations (thumbnails) so I am able to follow our beloved "K.I.S.S." method in order to try different styles and techniques. Plus, when it is drawn, you always have an eraser to change anything before making that first cut of material! When it comes to "larger projects" such as your Recipicating Hammer, I visit my local Big Box Store or Grocery Store, and ask for a few "Pallet Slips" (cardboard peices that help protect the palletised goods) early in the morning after they stock shelves. You can NEVER have too many of these, as they also work splendidly for C.A.F.E. (Cardboard Aided Fabricating & Engineering) that we all know of. As I am only 14:53 into this video (so far), Zerk fittings will be your Best Friend to keep everything from seizing... Especially if you grind in a few (4-8) groves into the Vertical "hammer arm" without having to worry about Seals about ½" above the Zerk Fitting at "absolute bottom" of the throw.

Ripper💪 That's what old school is all about. Using your head and hands rather than your credit card is such an important yet forgotten skill. I can only inspire my son, Good to know, there is someone doing that job on a bigger scale. Good onya 👍

Awesome build. As a dyslexic, I can really see how this can be done without a plan or blueprint. To make something like this out of scrap and off the cuff is right up my alley.... just love it. 🙂👍

You’ve done it again. I want to build one of these hammers. I am amazed how simple the mechanism is. Cranium Engineering at its best. Think it, build it!

I've thought about making my own tools for a long time now. just watching these series of tool builds has made my mind up to get off my ass an just do it

One of my favorite of your videos so far💚🇬🇧🌱 love how you've kept it simple for us poor folk who don't have lathes & CNC... It's great seeing you work it out as you go, Genius at work! Thanks Karl👍

Cool I made a 2 x72 belt sander out of 95 % scrap and and old treadmill motor good stuff 👍

I built a copy of this little guy with a couple tweaks, added a 10.5 driven sheave from an air compressor which gives it a little more power and I ran flange bearings on the frame to reduce friction and make it run smoothly. I had previously billed too much larger power hammer of my own design with a 48 inch throat and a four horse DC permanent magnet motor, but there are some things this little short style machine does better than my other stroke machine.

Great work love that you did it using simple tools too !

I bought an old farm site about 5 years ago and I’ve been steady picking through all the old wood and metal and everything else that people have piled up around here over the last 100 years and using it to build things and furniture and an ice fishing house and lots of other stuff. It’s fun to just let your imagination loose and challenge yourself to build whatever it is you need out of whatever you got laying around 👍 tell Brenda I says hi!

I never tire of Karl's videos and I've been an engineer for fifty years. A master of keep it simple stupid that works beautifully. You can tell the quality of the craftsman by how tidy their work area is too.

" Google engineering degree.." That cracked me up! Karl thanks I needed that laugh!!! I believe the half horsepower should work fine for that purpose. Shouldn't need anything any bigger than that. Ya made yourself a descent little metal stretcher there bud..looks pretty cool. That tool will definitely come in handy for sure.

Wow, I'm blown away! From the title of the video, I thought you were just going to assemble a kit. Probably one of your best videos. Love your tool making. You're also pretty dam good with the gas torch. Keep up with the great content.

This has been an inspirational offering on how to turn previous mistakes into triumph!! Thanks, JD

You already are an engineer and a designer. Excellent work.

Carl, this is awesome. I’m a mechanical engineering student about to graduate with my degree next month, you did a great job designing and building this machine. Can’t wait to give it a go for myself and see how it turns out!

You make a soul feel that you are talking personally to him individually. I is a special people skill that makes one feel that you are good friends. Thank you so much

BEAUTIFUL !!!!! PAINT IT !!!!!!! GO TO WORK !!!!!!

Thanks for making this video. You have inspired me to make a power hammer like the one you made. I greatly appreciate and admire your ingenuity and resourcefulness. Thank you.

Fantastic build! If you were to add weight to the large pulley to counterbalance the stroke, it would take some of that vibration out. Either way, it's a very clever build my friend!

I've been working with metal all of my life as a welder and eventually a Maintenance Manager with an Associate Degree in Welding Technology. Worked In Steel Manufacturing for thirty years. Probably seen and done everything he's done in some form or another. I'm always entertained and learn a new way approach to metal working projects I take on now at Seventy. You can teach an old dog new tricks!

Awesome stuff man. Love watching your work. Been an engineer for more years than i care to count and find myself on the opposite side of the world having emigrated needing to start over with a new workshop. Keep up the good work 🤟

Hey Karl, Really great video ! The darn thing actually does what it was built to do. Some of the vibration may be eliminated by grease in all the moving and sliding parts as well as some heavy gussets within the C frame. If you decide to add the gussets, do not just weld them in the center of the tubes as they will cause the area you weld them to to flex and crack. You can add thick pads that cover a large area to affix the gussets to or weld them to the outer sides. Great job man.

As for the pulley ratio, the PI's cancel out so 8/2 = 4/1 mechanical advantage. You've given me some ideas! Thanks man.

Afternoon Karl... Ingenious!!!! What is so righteous is when you & a customer walk into your shop, they see the equipment YOU made to do any given job!! Kudos to you!!

Thanks for sharing the passion. Its contagious.

I have that exact same motor with pedal,I've now got a plan after watching your video,thanks a ton. Great tutorial as usual.

1:01 - after being down in "the States" - wait, what? Always a pleasant surprise to land on good CDN metal fab content!

So only thing I see to add is a foot control on the arm you have to pull to engage it. So you have both hands free

I love your idea of welding the round pipe at a 90° angle so that you can cut along the length of the pipe! That should have been a pro tip

Very well done. You are an inspiration. Thank you.

Well there ya go, a Little bit of scrap some good Knowledge, Look at what you can create. Brilliant Job Karl, works like a Bought One!

Those sewing machine motors are severely underrated. I used one to start the slave motor on a rotary phase converter for a guy. Dude thought I was Mcgauver lol

I can empathize with your machine building excitement. I have been working on a 20" disc sander. More for wood working then metal working. It's machine building none the less. This is mostly made out stuff I have on hand as well. Your hammer is awesome. I have seen pictures of the pull max and Yoder hammers, but haven't fully explored the mechanisms that make them work. Great stuff!!

Nice project, I like that you didn’t make it too tall, it’s easier to control the metal that way. Thanks for sharing.

Love your enthusiasm and creativity

Man, you are so humble and awesome 👌 really enjoy your shows. So effective and efficient.

Watching this video just gave me a great idea for a project on the farm. Thanks Karl

Fair play, I made a planishing hammer with a air chisel after watching yours, but I'm loving this, can't wait to make one. Love a challenge.

Thanks Carl, I've been building one in my head for awhile, I think you've answered any concerns as to whether it would work. Cool build. I will build one over the summer. Cheers

Very smart man, your idea worked very well. I was smiling the whole way through this video !! "Keep on keeping on" THANKS

Love this kind of creativity and resourcefulness

Karl thanks for helping halfasskustom very nice

Nice job Karl, this is a great tool. Thanks for your videos, I watch all the time.

Loved this video! Thanks for staying off the mill & lathe! Junk Yard Wars baby!!!

You are so positive. I love it.

Great build Karl! You might consider adding a brace between the housings that contain the cam and the linkage to eliminate any flex and make the most of the up and down hammer movement. Can't wait to see the next installment.

That thing turned out a real winner! Love it …thanks

And this is the exact reason we keep all those little bits of scrap steel. Very interesting build Karl. Probably not something I would make, however. You could easily take that mechanical movement and use it for ??? That's what's nice about being able to look at a mechanical object and see how it works.

Work of art Karl, well done!

Jay the Florida pool pump motor repair guy. When Service Calls Longwood approved ! that was good info 2 see & know👨‍🔧good job !! Make It Kustom ,

I use scrap when I can. I've made a ton of projects from left overs and they look just as good. Cleaning it up is what takes all the time.

Proper job! Great video. Simple build, inexpensive parts, literally anyone who has the skills to use one of these sould have the skills to duplicate the build. Also, nicely done on the shoutout to Sosa Metalworks. Your vids are _always_ clear and concise. I don't have the time or patience to sit through a long-winded, multi-part series on how to make a bushing, which is why I stopped watching several other channels that I won't mention by name. 😇

That really turned out Great. You really Hammered the Engineering.😁. I was wondering how you were going to get the Up and Down Motion for the Hammer. Like you said, you don’t need the Hammer to go very far in it’s movement. Plus you added the adjustment on the bottom. This is a Great Project for the do it yourself type Person. I think I will get some Metal together and make one. I have already made a nice 2” Belt Sander almost just like yours. Thanks for all the Work you do making these Videos. 👍👍

Great video idea!!!! Love the idea, very original, in my opinion. We love learning.

That's flipping amazing👌👍👍👍👍!love it! Thank you soo much!!!

A great project!!! I love this kind of projects they make you think and come up with all kinds of different solutions. I am thinking that you probably can put a cam right on the motor's shaft eliminating all intermediate parts. I mean to use a short shaft with a cam between, say, two pillow blocks and conned it directly to the motor. It should work as well. The cam can also be put on the large pulley's shaft if the motor is not strong enough to operate directly from the shaft, possibly a piece of a car camshaft can be used for the shaft. 🙂 Another thing, just a fantasy project, to build a human powered hammer without a motor. Make a pedal operated heavy flywheel. This way you can operate the machine with this pedal, like an old sewing machine.

Wow! This is wicked! Dude I love how anyone can do this! Thanks! Thought you were gonna mostly assemble a kit or something… this is a whole other level 🤘🤘🤘🤘 love it!

@13:35 this is frikkin awesome 🔥 🔥

Thanks for all your time n help bro just bought a Lincoln mig tig n stick combo welder n a disc grinder n a sander going to start working on my 85gmc short bed do my own dam work you n Halfass garage n gene Winfield r my effin hero’s thanks for sharing your knowledge and love with all of us bro 😎

Awesome job Karl!

That's badass! Nice job!

It's so inspiring to see how Karl is happy and excited by his work)

Just awesome!

Awesome! Gives me hope! Who doesn't need more tools!

Kudos brother for sharing that with us!!!

I built my own tools in my shop . Make them safe and look good. A nice foot pedal connection to the clutch will be cool . The old machines. We're made that way a lot.. athanasius for shareing.

Awesome job very inspiring and simple!

Ingenious and resourceful…..well done !

Great work. We shared this video on our homemade tools forum this week 😎

Wow Karl, this kicks ass. I would not have thought to use the industrial sewing machine motor or that the small stroke would work so well. This video also helps me to think through improvements I need on my el cheapo English wheel! Looking forward to making the mods and eventually building a hammer.

When I saw the motor I thought you were going to start doing fabric upholstery. That is a 1/2 horse industrial sewing machine motor. I am working on a 48 Chrysler Imperial Royal 3 window and have the need for this machine. Thank you for the inspiration, I will most likely use the lathe and mill, only because it is in my arsenal. But this is great for the garage builds and keeping an art alive that isn't seen much anymore. Great job keep teaching on your channel it's a great thing. How bout that he'.

I am from Algeria, I work as a mechanic, and I learned a lot from you. Thank you. Nice content. Keep going

Plus with the "short throw" that this has, means less chances of fingers being crushed! As a fellow engineer (environmental for a hardcaping company), your process and execution of this turned out at 8.75 out of 10 to me. Using material you had in your Fabricating Shop (minus the Sewing Machine Moter and Flywheel), I would proudly claim this as mine (if I had a need for a brandished hammer) to be honest! Please notify us of upgrades/modifications that you do/did with this. It is currently 31°F and 0254 PST here, but you deserve a "KUDOS" bar for this... Sorry, I am 49yo, so you may not know what is ment. This was an early 1980s granola bar that was marketed "back in my teenage years", you executed this build excellently Bro!

Great video!! And even better idea to call out other great fab folks!! Recycle, repurpose, reuse! Make tools!! Again, great stuff here. Hey Brent, jump in on this too!

Toggle mechanisms multiply force as you have deduced. This is why they are used on machines that require high forces. The one that I am familiar with is a hydraulic molding machine that uses the toggle mechanism to apply force to keep the mold closed as the plastic is being injected into it. Also good use of a commercial sewing machine motor. These motor and clutches are pretty sophisticated. Great job on the build.

This is awesome, Karl!

Real nice job Karl Looks great

Like old school steam engineering 👍👍. Nice!

That's awesome, I been thinking about making machines lately, so this is definitely encouraging

thank you so much, I finally understand completely how a pullmax works including the adjustable stroke

Man when you pulled on that clutch and it started hammering… I think I smiled as much as you did. Awesome build!

@Make It Kustom Hi Karl, just a thought with your chop-saw. If you set your first cut up, you can set your combination square up as a depth gauge to the side of the vice for any more cuts the same length to save holding the cut off against the stock. Hope all's going well for you. Dave👍🇬🇧

Awesome build, great video Love this machine building stuff👍