CalebPetersenPhD

Never mind, I realized that the silicone sleeve has long, thin tabs that surround this sheet metal part and hold it in place relative to the holes in the capacitive sensor tray.

Hi, my UM S5 extruded plastic up past the silicone seal and into the space in the print head surrounding the extruders. I eventually got the plastic out, but I seem to have broken something in the lower fan bracket tray, because there is a sheet metal part floating around, and I cannot get the new silicone seal to lock into the various slits for the tabs on the seal as a result of this thing floating around. My S5 is the older version (has the UltiBot logo on the sides, rather than the newer version with the U) if that's relevant. Here's a brief video clip showing the sheet metal part that floats freely around: Strangely enough, the replacement capacitive sensor tray doesn't seem to include this free-floating sheet metal piece (https://fbrc8.com/products/capacitive-sensor-parts-ums5-s3). Does anyone have any thoughts on how to reattach this piece or get replacement parts? Thanks, Caleb

What are your retraction speeds and distances for each extruder? You probably noticed this, but they will be different for each extruder (make sure to go to both extruders' respective tabs and set them appropriately in Cura). Sometimes retracting too much and too fast has paradoxical effects.

Hi, has anyone ever used the Material Station for the S5 to expand the effective number of materials you can print with during a print to 5? Kind of like how the Mosaic Palette and Prusa MMU(2S) material-switchers work (but those unfortunately only work with 1.75mm filaments-yes you can get an adapter, but because it uses a Teflon tube you're limited to a max print temperature of 260°C). I'm sure this isn't a formally supported use of the Material Station, but it would greatly add to the functionality of the Material Station and justify its high cost. I don't see why it wouldn't work mechanically, though I don't own one at present to experiment with. Thanks, Caleb Petersen, PhD

Thanks, good to know about the spacers. Well, this shaft (the one running left-to-right towards the front of the machine) keeps starting to come out of its alignment (so far it hasn't come out of alignment so much that I can't just push it back in, but if I leave it unattended for enough time I fear that it may pop completely out). I suppose the belts and sprockets must be misaligned somehow but I couldn't find any instructions online as to how to realign them (?)

Hi, on my Ultimaker S5, the shaft that runs left to right that is closest to the front of the machine has been popping out of the bearing on the right side, (causing the long right belt to fall off the sprockets). I can pop the shaft back into the bearing easily enough, but on the opposite side (left side) I see a black, cylindrical plastic sleeve that I assume should go into the left bearing that I can't figure out how to get onto the shaft. I couldn't find any maintenance instructions--what do I do here? Does the black, plastic sleeve bearing need to go over the shaft as it sits inside of the ball bearing? Also, any ideas how this happened? I see that a set screw is missing on the front-left sprocket for the shaft that runs front-to-back on the left side, and one of the belts has worn down a lot from misalignment, not sure if there's anything else I should look for. Thanks, Caleb

Hi, is there any way to change the extruder used for support from one model to the other? E.g. suppose I have 2 parts to print on a dual-extruder machine (Ultimaker S5): I want to print part A with material 1 as main material and material 2 as support, and simultaneously print part B with material 2 as main material and material 1 as support. Is this possible, short of modeling my own support? Thanks, Caleb

LOL! Well in fact 9T labs used to have a modification for one Ultimaker printer, I believe the Ultimaker 2+, that could lay down continuous fiber much like the MarkForged. However, they switched to a different printer now for their final product, and the whole thing is hugely overpriced if you ask me. Then again, so is the MarkForged, especially considering how crappy their slicer is and how little customization there can be. $15k for $800 worth of hardware? Nah

You guys are terrible for getting my hopes up 😜 Ok, makes sense we probably won't see a new printer this year. I'd love to be proven wrong though 🤩

Hi, any rumors if Ultimaker will be coming out with a new printer this year? They released the S5 in fall 2018 and S3 in fall 2019... Thanks!

Hey, still available?

Hi, if I have the "adaptive layer heights" experimental feature turned on and if I have the object floating above the bed, z>0 (with support being generated), slicing generates no G-code and predicts it will take 0 minutes to print the object. However, if I lower the object to the bed (set z=0) it slices fine with adaptive layers. Object also slices fine with z>0 if adaptive layers are off. I can't post the object but have tried multiple parts so I assume there is nothing wrong with my file.

But all non-infill extrusions are not underfilled at all. Infill only ends up being grossly underfilled when I set a larger infill line thickness (e.g. 0.6 for a 0.4mm nozzle). Whereas Simplify3D produces G-code that makes proper infill lines when I use a default line width of 0.48mm for a 0.4mm nozzle and have the infill line width further inflated by around 130%. People have speculated that there is a bug in Cura that causes it to not increase the fill rate commensurate with how the infill line thickness is increased.

Looks like Cura 4.1 Beta doesn't add this feature 😪 Simplify3D has very few advantages over Cura, but proper, fat infill lines when you assign a fat line width is one of them. Seems like an easy fix, hope this feature gets added.

No, I haven't ever tried to calibrate it! I have performed nylon cleanings and cleaned out the gearbox but since reducing acceleration and infill speed at least solves the problem of infill underextrusion for a standard line width that's a start...