AndyUK's Build - 1.2x1.0m Gantry

[AndyUK]

The slipping in the second video sounds like classic stepper stalling to me. The stepper torque just falls away with speed so if the mechanicals are good then just drop the speed back.

Well done for getting this far it’s a great achievement !

Thanks :)

I haven't yet tuned the drivers to the steppers, and I've been a bit conservative with the current through them (the water cooling loop which feeds the spindle and the x motors isn't running yet) as I don't want to let them overheat inside the steel box section. Hopefully I'll be able to hit 10m/min reliably when that's done, otherwise I'll live with 7.5.

Today I got the spindle running and the Z axis moving, both seem okay for first use :) Had to swap the spindle rotation direction, and I'm not sure it's hitting the full speed (the VFD says 200 when the dial is at full range, but that might be because I changed the analogue input range for the UB1 which isn't yet in control). Now time to focus on getting those limit switches working before I smash into something!

Jazz, I also quickly verified the steps per using a pair of digital callipers, and the X axis was spot on at 10mm and 50mm. Y axis was 49.95 on a 50mm move which when considering I don't have ultimate faith in the measurement method I'm happy with for now :)

[AndyUK]

Also, having some fun finding an appropriate waste board. Being that its out in the unheated and uninsulated detached garage, I need something thats going to be stable.

I've been canvassing local shop fitters / plastics suppliers / kitchen fitters for some Tufnol 1P/13, Phenolic Sheet, or Trespa Athlon. Looking for approximately 20x800x1000mm - any quotes I get back are in the £300ish range which feels quite dear, is that expensive or about right? Does anyone have any recommended suppliers or alternative materials to look at?

[JAZZCNC]

Also, having some fun finding an appropriate waste board. Being that its out in the unheated and uninsulated detached garage, I need something thats going to be stable.

I've been canvassing local shop fitters / plastics suppliers / kitchen fitters for some Tufnol 1P/13, Phenolic Sheet, or Trespa Athlon. Looking for approximately 20x800x1000mm - any quotes I get back are in the £300ish range which feels quite dear, is that expensive or about right? Does anyone have any recommended suppliers or alternative materials to look at?

You should be able to get a piece of HDPE for a lot less than £300. I've just bought a 10' x 5' x 30mm and it was only £500.