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Sheet Metal Brake and 3d Printer.
BillTodd:
--- Quote ---Can you lose microsteps?
--- End quote ---
Micro steps are only a sort of 'fudge' between steps they make the motor run smoother but have no defined position.
That said I do not think that is your problem.
It does appear to be worse (or only ) related to one axis .
[edit] One thought (looking at pics) : the head is mounted by two bolts (height adjust?), could it be wobbling between the two ??
S. Heslop:
--- Quote from: BillTodd on November 05, 2018, 09:04:12 AM ---
--- Quote ---Can you lose microsteps?
--- End quote ---
Micro steps are only a sort of 'fudge' between steps they make the motor run smoother but have no defined position.
That said I do not think that is your problem.
It does appear to be worse (or only ) related to one axis .
[edit] One thought (looking at pics) : the head is mounted by two bolts (height adjust?), could it be wobbling between the two ??
--- End quote ---
Oh yeah that's one of the things I checked. It seems fairly ridgid but I should probably put the indicator on it to see for sure. Right now though i'm making that exact same test piece again but rotated 90 degrees to see if it's more to do with the geometry or some slicer settings. I already did a test like this on the more complicated part, but i'm feeling the taller part makes it alot easier to see what's happening. The pattern being seemingly random too also makes it hard to really gleam anything meaningful since one run might randomly look fairly good if it's relatively short.
BillTodd:
Tall part.. is it rocking ???
S. Heslop:
Oh yeah WeldingRod, what speeds do you generally run your stuff at? I thought I had it for a bit with even lower speeds since this part looked very even from the front. But it turns out it's just a relatively even lean in the Y.
The part rotated 90 degrees turned out well so I was wondering if maybe it was the slightly faster travel speed as it scoots accross the whole part long ways. So I tried turning the speeds down even more. But i'm also starting to think i'm running on bad info as to what counts as a 'reasonable speed' (40mm/s). Running it at 30mm/s now but I've had the accelaration riddiculously slow previously where it probably never broke 20mm/s. Hesitant to quote the numbers in case it's real obvious that's my problem, but dang it feels slow.
Also the change of direction in the infill felt somewhat violent so tomorrow i'll try running it even slower on the infill. It's getting a bit late now and I don't want to trap myself into over 2 hours of waiting for the machine.
S. Heslop:
--- Quote from: BillTodd on November 05, 2018, 12:35:21 PM --- Tall part.. is it rocking ???
--- End quote ---
I checked that too. It's only 20mm tall but with a brim and good adhesion from what I can tell. But the lines are appearing in the long direction. It's 115mm long and 15 wide.
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