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I have recently built a rotating paint brush attachment for my CNC router table....


https://images2.imgbox.com/ba/be/gY9fRoxx_o.jpg

.....example of the end...

Did anyone solve this? I upgraded to grbl1_v1 and since then no movement.

Hi, I am building a CNC router table from parts on hand!

The table is 2000mm x 900mm. A steel gantry loves along the long axis and carries the Z axis assemble which has about 150mm travel.

The...

Thanks for the comments.

The stepper I will be using is actually a Fisher and Paykel washing machine motor, slightly rewired, which steps at 112 steps and has bags of torque.

This morning I...

Yes, I am using steppers.

Thanks for the comments. Seems I should be looking for a minimal backlash gearing stage of at least 20:1 and I have a worm and wheel which I might be able to fit, it will be more than 20:1

I am...

I am building my first cnc router table, 900mm x 2100mm and will be using roller chains as drive for the X axis.

Direct connecting my stepper motor to a drive sprocket would give a movement per...

I am still building my first cnc router table, 900mm x 2100mm, and I really hope the cable method will work as I am driving one side with cables to keep the gantry 'square' to the table. I hope it...

After some period of time chasing up dead ends I find that the steps per revolution of these motors is 112 which is 8 times the number of coils. The one I have runs quite nicely on a 3 phase stepper...

Arithmetic, yes, very interesting.....

I have made a bit of progress on this project!

The basic table has been welded up and I have received a driver for 3 phase steppers which I have tested with a Fisher and Paykel washing machine...

Hi Talonosi..

The chain is moving much faster than the gantry, more than 40:1 in the example I gave so maybe any errors coming from irregularities in the chain or sprockets would be divided by 40?

Thanks for the comments...

I am sorry if my explanation is not clear. This is what Wiki has to say about the differential pulley (which I know as an endless chain hoist).....
...

Sorry, I originally posted this in the wrong place, I hope this is more appropriate!

I trust this provides food for thought!

https://farm8.staticflickr.com/7571/16080279436_4f1765c8b3.jpg

...

Sorry, moved by me, I posted in the wrong place.

Thanks Andrew, unfortunately I must be wary of expensive options which I think would include pairs of 2 metre feed screws and racks. I am even considering the cable technique as described here...

I took the expensive route to get started and bought a kit of 3 steppers, NEMA 23, 1.8Nm along with drivers, break out board, power supply and Linux software preconfigured for CNC EMC2 etc.

All...

Hi Gene, I live in New Zealand so it is no suprise to find Australian made goods in circulation and I very much doubt this little lathe has ever been on your side of the blue Pacific.

All the...

Just so you can see this is an original made by Ronald Sher in Australia, hence very rare and much sought after............. :)

http://farm9.staticflickr.com/8208/8198903658_1360df8059.jpg
Name...

I will let the pictures do the talking....

http://farm9.staticflickr.com/8490/8198881816_6a401a7810.jpg
IMGP1089 by aardvark_akubra, on Flickr
...

I have since found this page http://static.instructables.com/id/Make-your-own-cnc-controller/?comments=all
He used F&Ps on his mill. Circuit diagrams for the controller here too.

I have just about finished my pantograph router and I am thinking how nice it would be to add CNC so the requirement is to move the trace point in X and Y directions.

Rather than use screws or...

Just thinking about a CNC router project and of course the question of stepper motor comes up immediately. Has anyone been using Fisher & Paykel Smart Drive motors as humungous steppers?

Hi
This is my first post to this forum, I am in Wellington/ Lower Hutt.

Yesterday I was thinking about making a pantograph for my router and soon discovered the CNC DIY router scene.:cheers:
...