MonoPrice Delta Pro - Height Map Interpretation?
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I'm finally restarting this old project and I could use an experienced eye interpreting my height map results:
The printer started life as a monoprice delta pro, which has wheels riding inside the extrusions/towers. Less than ideal and I can feel a little wobble in one of them. Unfortunately adjusting out that wobble is probably going to be a significant project (I don't have the correct tool).
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Does the rippling in the height map look like the result of a slightly wobbly rail? Or something else?
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Do you all think I could get away with a .8mm nozzle and .8mm first layer height on this kind of bed level? (or do I need to look into repairs before I go any further?)
Thank you!
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I was able to cobble together an improvised pin spanner and adjusted the v-wheels a little. (not sure I can go much tighter without putting too much drag on the motors)
There's still something else going on but it's a little more reasonable now.
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@tgarr said in MonoPrice Delta Pro - Height Map Interpretation?:
Does the rippling in the height map look like the result of a slightly wobbly rail? Or something else?
That pattern (ridges at one end of X turning into valleys at the other end) indicates that there is backlash in the mechanics. What's happening is that when the effector moves to a particular XY point other than the centre, the nozzle height depends on the direction from which the effector approached that point. G29 in RRF scans alternate lines in opposite directions, hence the alternate ridges and valleys.
To fix or at least mitigate this:
- Check that the belts are sufficiently tight
- Check that the motor pulley grub screws are tight
- Lubricate the ball joints and the carriage rails or wheel bearings
