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Author Topic: Set for mm but moving in inches.  (Read 437 times)

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Offline PeteG

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Re: Set for mm but moving in inches.
« Reply #10 on: May 16, 2020, 11:49:25 AM »
Your advice was spot on, thanks. I've just used the axis calibration tool, and run a test of X at 150mm & Y at 100mm, Y is exactly 100mm, but X is coming out 150.03mm so I think there maybe some errors creeping in somewhere.

Offline Graham Waterworth

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Re: Set for mm but moving in inches.
« Reply #11 on: May 16, 2020, 12:23:37 PM »
What figures are in the steps per for each axis now?
Without engineers the world stops

Offline PeteG

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Re: Set for mm but moving in inches.
« Reply #12 on: May 16, 2020, 01:43:29 PM »
Around 200 plus a load of numbers after the decimal point. I had to massively increase the feed rate and accel/decel and it's all working very smoothly and acceptably.

I used a dial gauge to set the steps, but X wasn't coming out right as I was only able to check travel over 20mm. Y was spot on, maybe because there are two motors driving it - maybe, maybe not. So I rigged up a jig to hold a vernier gauge and was able to set X over a distance of 100mm and it is now super accurate.