Few pics of my homemade CNC mill

There is web address with few pics of my DIY CNC. http://malamuterun.co.uk/cnc/homemade_cnc_mill.htm

nice work mate lovin the web site.

I use T2.5x6mm Synchroflex timing belts to transfer power from stepper to lead screw.X and Y axes have two motors to rotate the screws. And yesterday the belt snapped, not for the first time I gotta say. So now I'm planning to replace two 2.5mm pitch belts with one 5mm pitch on Y axis but still leaving two motors to steer two lead screws. Of course I'll need to replace timing pulleys and make some tensioners. Stuff ordered,hope it will work.
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Looking good :smile:

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Originally Posted by wiatroda

I use T2.5x6mm Synchroflex timing belts to transfer power from stepper to lead screw...

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I've used XL pitch belts, at least 1/2" wide and have never had any problems. Can also make your own pulleys for them with a bit of care which saves a bit.

What have you used for the nuts on, I think, the X axis? Is it just a brass/bronze bar tapped with the hole for oil or something more elaborate?

I don't have rotary table to cut the pulleys :( . Money are sometimes an issue so I went for smaller pitch, cheaper belts and pulleys. On all axis I've got M16x2 lead screws. Nuts I've made myself from 32mm dia steel bar. They are 60mm long with a grease nipple re-drilled to fit 4mm nylon tube for oiling. Very simple, good and cheap solution, with no backlash at all.

you don't need a rotary table to cut the pulleys use your cnc to cut them out of plate ;)

You are right Chris. I've never cut timing pulleys, but some time ago I was messing with robotic arm gripper. All parts I've cut on my CNC from 3mm steel.
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Originally Posted by h4ppy-chris

you don't need a rotary table to cut the pulleys use your cnc to cut them out of plate ;)

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That does of course depend on the profile. You'd need a very small cutter to get a decent XL pulley with that method.

Stuff have arrived. I managed to do some drawing . Hope tomorrow I'll find some time to put it together :)
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Is this PM542 stepper driver? What voltage do you use?