I hope and assume I’m just being stupid here, but as far as I can tell, the supplied/recommended fasteners for the feet do not fit into the hole on the foot. The instructions call for an M5 x 30 screw, which is supplied with the kit, and which does not fit into the hole in the foot. I was able to force it by just screwing it into the plastic, but it broke the plastic after a number of turns. After watching assembly videos by Making Stuff & Thomas Sanladerer it looks like they’re supposed to slide through the hole easily. Additionally, in the Making Stuff video, he says that we should be using a #6 screw, which from what I can tell is substantially smaller than an M5.
So is the guide wrong on which screw to use? Or am I missing something obvious?
Additionally I noticed on Sanladerer’s video he pulls up the parts list on here & it recommends a #6 as well. Is this for the Burly? Did it change? My foot fits the EMT tubing perfectly, so I know that’s sized correctly, so I’m really pretty confused here.
Hrmm… It sounds like your printer is doing fine on the XY plane, but the Z axis may need calibration. You’re right, the M5 bolt should slide right in, or maybe have slight friction. Certainly not be tight enough to break the plastic. Do you have calipers or a short metal ruler around that you could double-check that your M5 bolts are actually 5mm in diameter? I know that Ryan had some issues with mis-labeled bags of parts in his kits from his supplier, but it couldn’t hurt to double-check. If your bolts are 5mm, then you may need to check your Z axis on your printer. Ryan has a big (140x140x140) calibration print that is set up to check not only straight distances, but also squareness.
I just did a calibration on the printer & set steps/mm for all 4 steppers. I’m not home right now to measure, but I don’t think the bolt is the issue. I had another set of M5 bolts, and those wouldn’t go in either. What size is the hole supposed to be? 5mm +/m 0.1ish I’m assuming?
I’m not sure what @vicious1 uses for tolerances, but my guess is that it’s 5.1mm dia.
You’re out of my bubble of knowledge now. I’m sure someone with a more comprehensive experience set will come along and help out shortly. Sorry I couldn’t be of more help.
5.2mm typically prints at 5. The screws will go into a smaller hole pretty easily by threading them in. If your part is breaking you have a very far off print.
You tested the screw and calibrated the printer I am not sure what else to recommend.
I suggest you print that giant test part to verify a second time.
I’m getting about 4 mm for the hole, although it’s somewhat hard to measure with the calipers, just because of the position & faces in the way.
It doesn’t look oblong, like one axis is off relative to the others, and the EMT tubing fits in perfectly. Can I get the X/Y/Z dimensions of a correct foot? I’m reading 53.55 x 53.15 x 39.95 mm on mine.
This does seem to be the case. Is there some minimal set of parts I could print to replace the parts that differ between burly & primo, or are they all different? I see a “Update from burly to primo” section on the parts section, but that seems to be for the non-printed parts.
The assumption is that all the parts will not be compatible. The one exception is, you can mount the burly tool holder (which, I think, is also the 525 mount), but it requires different nut traps.
