New build with recycled parts on a ridiculous budget 120cm*60cm work area

[Desertboy]

Excellent work by Allan will have to check it out, I know people have also got PS3 and Xbox controllers working in Linuxcnc for controlling the machines ;)

Having some latency issues with the I7 not geting the performance I should, it could be a few things from what I read up.

But the main candidates seem to be Nvidia GFX card (Need to work out how to turn it off in Linux so I can use the on board, machine is dual boot with windows want the Nvidia card for Fusion.) Possibly SMI, disabling cores and a couple of other things.

Toying with swapping the Y axis nema mounts so it's belt driven 1:2 motor:ballscrew as the 1604's have a critical speed over 2000rpm so I'm hoping I can drive the nema's at 1000rpm and get 8m/min out the screws and drive the 2010 at 1000rpm direct drive so I get 10m/min on the gantry. Resolution will be halved doing this but then the resolution of the 2010 ballscrew is still less.

Using 2010 ballscrew will give positional accuracy of ~0.05mm, slightly better with the 1604 geared 1:2 (Which essentially becomes an 8mm pitch for accuracy purposes) the microswitches I'm using (Omron) have a repeatability between 30-50 microns almost the same as the cheapo inductive sensors most of us use which works out to 0.05mm. So my repeatability on any part is limited to ths it might be better of course but in theory it should never be worse. (Ignoring wear and tear)

I have some 40mm inductive sensors I recovered that run on 48v I got from a large printer I scrapped I suspect these have high accuracy over larger distances, when I googled them they were over £100 a sensor the main reason I kept them lol.

I might have to strengthen the gantry with angle steel ground flat both sides and cnc the holes to bolt in into the T slot so the machine is rigid enough to actually take advantage of the speeds and can my PC generate enough pulses for that speed. I can see a step generator in my near future lol. I'm glad I have a friend who works for a big cnc firm as a foreman and who's job for the first 10 years was grinding ;) He also told me they been binning Hiwin's so he going to see if he can get me a set before they go in the skip, he laughed at my 15mm Hiwin's lol.

Thinking when I upgrade or build new if I don't go servos then going nema 24

https://www.ebay.co.uk/itm/Nema-24-S...item1c54c443d4

Good price for 8 wire motor, 4nm

Had a few crazy ideas for upgrading including 2* 2m travel gantries ;)

Still not got dual homing sorted but I did get an engineers square to straighten the gantry (It was well out, which is the technical and scientific term) and was happy to see when I straightened one side and checked the other side it was perfect. I had the machine switched off and rotated one ballscrew by hand.

Recessing the extrusion into the plate really helps in squaring the gantry you can feel it click into place when you've got it right.