I didn’t want to bring back the old thread on this, so just starting a new one imploring somebody at Snapmaker to do something about this issue… My toolheads STILL randomly have park/unpark issues where the toolhead does not latch properly.
It is NEVER during a print and always either from the home position or while preparing a print… Its super frustrating and I’m just glad its not all the time.
I love this printer’s quality but dang… I’m tired of having to manually fix this and resume the start of my print.
You can first home the machine to Homing calibrate, then test which of toolheads 1~4 has inaccurate pick/place coordinates, and individually adjust that toolhead’s coordinates with the head-specific adjustment function.
I appreciate that Simon but this has been an ongoing problem and now its random during specific events, I would think if there is a coordinate issue it would happen during normal printing as well. If you remember I have been adjusting the coordinates ad nauseam since I first received the printer, I know the coordinates are fine. Thank you for the reply though sir.
I’m using my Kickstarter coupon to buy a new toolhead, maybe its a toolhead issue itself? We’ll see… I know I seem to be in the minority with this problem.
Is it possible your X-axis isn’t parallel to the toolhead? Move it manually and watch—if they’re not parallel, that could cause this. Also check if your Y coordinate is close enough to the toolhead; that’s another spot to watch.
Have you asked technical support to help you check it thoroughly before ?
I think sometimes you need to hand the problem over to them, because they have a larger sample size.
Possibly, but it looks parallel to me. I think I’m going to have to contact support again sadly, its so weird because it literally only happens when I start a print. I then have to manually put the toolhead back on the dock and hit cancel for the error and then press start, works fine after. I could run a complete 24hr print job running all 4 toolheads and it performs flawlessly…
I’m honestly thinking it might be the new firmware… But again, I seem to be the only one that has this issue.
Since the printer attempts to determine the absolute position by “homing” the front and sides before each print, I suspect that the slightly loose plastic cover behind the display on certain devices might be giving the printer an incorrect absolute X/Y position.
I experimented by placing a 1 mm thick piece of cardboard against it, and even then the printer was unable to pick up the toolheads afterward—the holder approached the toolheads exactly 1 mm off.
After turning it off and back on again, and then triggering the toolhead exchange once more, the base positioning worked perfectly again without the cardboard.
There is supposedly a workaround available to better secure this cover, but unfortunately I don’t have it at hand right now.
That makes total sense! The front of my printer does seem a little off and not quite “straight”, its not bad but noticeable when the printer is homing. I’ll def have to contact support now and see what the solution could be and find out if it is the cover behind the display or something else, like a bent frame. Thanks for the post! @TierParkToni
So, since it homes every time and resets the home coordinates, it could start at a different position every time and head off on a previously set delta and end up in a slightly different position to pick up a head.
although the space between the toolhead and the plastic cover is small, i have observed the homing and it appears it should not home against the plastic it homes the gantry against the frame left and right, also the side homing does not touch the plastic cover but the toolhead should stop against the gantry-carriers.
So if there are cases where the toolhead touches the plastic cover instead of only hitting the end-of-travel this could indeed cause homing issues.
Here is a view of my U1, you can tell the left side where homing occurs is not equal to the right side. The entire top left is angled outward. Would that be a replacement?
I have, just waiting on a reply. The frame is definitely off from the plastic panels, just need support to tell me if that is a contributing factor or not. We’ll see!
Well its not the panels according to support, which makes sense because mine is bent outward and not inward. Homing is apparently unrelated unless the internal panel is preventing homing as mentioned above, mine is fastened securely.
Support has been amazing throughout this entire troubleshooting effort.
Last couple prints were perfect!
I swear this machine prints so good… I printed this Spawn bust in .20 Standard and it printed like a .16 or .12
