Acceleration/Instant Speed for Prusa/P3Steel?
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I have the 300x200 Orballo kit. I am using igus bearings
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@whosrdaddy another machine is a basic RAMPS Orbello complete kit. The build was a right faff and had a few conversations with them regarding differences to the advertised product! This machine was a second hand machine that was an Orbello 200x200 frame. The next build is a very similar build but not orbello. Both second hand frames sand blasted and zinc plated.
Machine 2 will definately be 24V, not 100% sure about steppers yet but better belt and pulleys will be ordered tomorrow.
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After a few days of the odd build in the background I am pleased with the results. Turns out one of my belt grippers were slipping on the x-axis which made problems on small sections that looked like over heating. They weren't. Original temp was 200C, now at 230C.
Firstly the benchy as is...Secondly a feature than I'm 99% sure is belt or pulley related for obvious reasons.The scale ontop is mm. I'm using a 2mm GT2 belt:
Finally the one I'm looking for a little conformation on. I see a similar effect on my RAMPS P3Steel (this one is d0.6 + shield) is this to do with the step resolution of the drives? I'm using 16t pulleys on 1.8degree steppers. The yellow circle limits the main area and the red line follows the pattern of one of the wobbles. There are similar opposing patters on the bow which are far harder to photo with a phone camera!
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Down side now is I really should re run the filament diameter checks and extrusion corrections!
- white parts are a bugger to photograph! Black parts (especially matt) hide allsorts of sins!
Edit:
For completeness this is:
- 200x200 P3Steel (Formerly Orbello frame)
- Duet v0.6 + shield, z steppers seperately driven with G32 levelling
- Bontech clone (will replace when cash allows) driven by a 0.9 stepper and ~400mm bowden.
- 12VDC system with arduino relay board used as interlocks for hotend and heatbed.
- E3DV6 all metal with 0.4mm nozzle.
- 3DFilaprint Premium White PLA ran at 230C.
- Mk3 Alloy Heatbed at 50C with glass plate sprayed with 3DLac (testing super cheap hair spray when that runs out) insulated on the rear.
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Looks like the circled effect is the Moire or Salmon Skin effect. I've got some TL Smoothers I can try to see of they have any effect. May struggle on voltage a bit with the 12V supply.
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Salmon skin on a duet? I thought you'd need 8825s with misconfigured decay to get salmon skin ...
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@oliof an old Duet. A4982 with the pin to ground from factory that solves a decay problem highlighted by many modifying their stepsticks.
I'll read up on the application of TL smoothers and breakout the PC scope to see if I can see the problem it's trying to solve.
I welcome other suggestions to what the problem maybe, but the other P3Steel machine that has the issue does have the drivers you mention.
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@oliof cheers!
Microstep size on the axis would be 0.01mm, and major 0.16mm. I think this maybe extruder originated but the distance for step and microstep will take a little more calculating than is achievable while my son is charging about!
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Pending check about 0.031mm head travel for microstep and 0.492mm for a major step. Will check pattern on benchy but that is a candidate. -
Another thought after a night sleep. I may have my extruder drive pinched up too tight and it could cause fluctuations in the extruded material.
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Had to rebuild my DSLR after the mode switch breaking off but you can see a collection of ripples on this part. Regards another post of mine I'm happy at how well the ripples have shown up without a macro lens. Well, I'm happy I can photograph them, not so happy they are there!! This photo is a bit fussy around the edge because I didn't do such a great job at removing the background.
There is ghosting/ringing coming from the lip of the hull, just below the forward section of the cabin running over the hull toward the bow. The Moire effect that I'm most interested in is the diagonal pattern that I originally highlighted in running from the stern toward the bow along the hull.
As you are looking at this the extruder ran from left to right along the hull.
Edit: I am aware of a z-wobble and possibly an extruder issue that I have been working to address since this part was made.
Edit 2: Is this effectively running on the limits of what can be expected from the v0.6/v0.8.5 with the 16x micro stepping without interpolation? 100 micro steps per mm and 16x micro stepping leaves 0.16 per full step and 0.01mm per micro step.