3D Printed Pulley testing - Emco Unimat 3

Testing 2 new 3D printed pulley systems on my Unimat. Showing both toothed and rounded belt systems. The toothed belts eliminate slip but they cannot be stretched off the pulleys or be installed as easily as the round belts, nor can they handle any sort of tool jam well. I am using green polyurethane textured belts for the second setup, which seem to have great grip on the pulleys, this is probably the setup I will stick with for now.

[@ronitsingh85]

very satisfying sound, smooth. The DC motor is quiet and smooth running. I have the original motor on mine and it hums and periodically the sound goes up and down. Must be the bearings so will change those out. Want to keep the original as long as I can. But I must say changing the speed on a fly with VFD is neat, I dont much like changing them O ring belts but its not too bad. Great little true running machine.

[@jeffrey-deitch]

Awesome. I’m glad you finally got time to print & experiment. Looking good!

[@Themheals]

I made a pulley and belt for my drill press. It can be done. Its amazing

[@tijhuisjoeri]

This is what i was looking for, thanks

[@JustinDaze]

What's the model of the continental belt? Would you have a link for it?

[@proprietarysonics3723]

uk.rs-online.com/web/p/timing-belts/1821305 I used a 9mm wide version but any will do. I suggest using rubber pulleys though as they are very smooth running and have lots of grip. They can be made to any size easily

[@jeffrey-deitch]

Round belt certainty quieter, but what about torque capacity while making a serious cut?

[@proprietarysonics3723]

Yes I still need to test this with some bigger loads. The belt texture and pulley finish does give a much better grip than the standard O-ring and aluminum pulleys though, so I am hopeful. Now I just need to finalise the pulley design so that it doesn't warp when clamped to the axle, but its almost there

[@rufinolopezgomez6168]

what is the diameter of the spindle hole of the chuck?

[@RealDiaboy]

Nice chuck - seems much larger than the standard emco one? I have the same machine but I haven't got round to using it yet - the old motor is pretty worn and am considering a brushless upgrade. Where did you get the indexer from, if you don't mind me asking? Nice one on the pulleys as well - when mine give out I'll know who to turn to :P

[@proprietarysonics3723]

The chuck came with a few extras when I bought the lathe. I tend to use this keyed one more oftern than the thin chuck. It is made by emco. I spent sometime looking at brushless motors but the options for RPM and speed control are not are desirable at a large DC motor from my research. Check out my other videos to see the motor setup details. The Indexer is a cheap 75mm table from India, about £60 new. Thanks

[@RealDiaboy]

@@proprietarysonics3723 thanks, I'll be sure to check them out!

[@ericphilippo9940]

Hello ou avez vous acheter le mandrin

[@solotwincam]

Bonjour, pouvez vous nous fournir les fichiers STL des poulies ? J'ai un Emco Unimat 3 Gilles Thanks Gilles

[@proprietarysonics3723]

email me and I will contact you. Thank you.

[@Jocie-LeighBayliss]

Hey did you get the files? Would you mind sharing? Cheers

[@danielclair5938]

Hello Bravo for the pulley test; I inherited a Unimat3 without the motor mount and fixing. Would you be kind enough to provide me with a side drawing of this part and also STL files of the round pulleys thanks in advance I can buy these STLs with paypal

[@proprietarysonics3723]

Hi please email me [e-mail] thanks

[@Jocie-LeighBayliss]

Hey did you get the files? Would you mind sharing? Cheers

[@Jocie-LeighBayliss]

Emailed you dude

[@menavill1]

Mostraste ,¿pero que? ,cual tenia de fabrica?,cual agregaste vos?y la tercera que no probaste ,para que era?

[@АлексейФедоров-м8я]

Какой диаметр у патрона?

[@pramodjalgaonkar1221]

What is belt pitch

[@proprietarysonics3723]

It's a 3M belt, so 3mm pitch