So my printing quality is improving, but I’m now having a problem with the extruder leaving little blobs of filament. They look like icing a bit…
Could it be related to the slight raised corner on the printer bed? You can see the print is thinner in the left front. Fixing that is my next project…
Or maybe they are being caused by the head extruding too much filament?
Actually looks like when my printer is running a bit too cool for the filament. Try raising extrusion temp 5-10C.
It’s at 200 right now, I’m actually having an issue where I have to quickly snip off many of those burrs because they are browning.
There is a fan attached, but it is not turned on. I tried turning it on and it made it harder to remove the burrs before they cooled. Maybe I could turn it back on, but then raise the temp? I’ll try that when I do the next piece.
Maybe your extrusion multiplier is a fraction too high.
I just checked that. lol
Originally it was 1.1, but when I swapped to this white filament I noticed it was 1.8mm thick in most spots, so I lowered it to 1.09. I’ll try dropping it to 1.08 next, unless you all think I should take it even farther…
I didnt know you had a printer Robert? Is this since i saw you at the class?
No, I’m still using the one at the makerspace.
Hey, that print looks familiar!
Yeah, it’s the remixed version of the Thingiverse gum ball machine. The one with the smaller capacity and double sided drum.
Yeah I made the original a little too generous. I have been meaning to upload some additional drums for different payloads of candy.
Huh, Thingiverse lists the creator as Eric Durwood? Pseudonym?
Check out the remixed version by MakerBobDesigns. The double sided drum and coin plate (cam?) look great. I’ll let you know how they turn out too. So far all I’ve seen printed is the flappy door, with the front plate still sitting on the print bed at the makerspace across town. They closed before the print could finish and I had to leave it running.
We plan on making a few of them to show off at our local farmers markets. Not to mention pay for some of the filament that went into printing them. lol
Yeah pseudonym. If you click on the profile for erikjdurwoodii you’ll get my name.
Im glad you will be getting use out of the design! Another gentleman messaged me last year that he printed five for his convenience store. I would love to see pictures of them when they are done. Thanks!
Definitely! I may even create some time lapses of the second one being printed.
I think Your print bed is poorly calibrated. Look left of the image, the layer is thinner than the right with blobs. This is likely a result of a jam of the filament. The filament is stuck in the Hotend because distance to the bed is too low (left on the picture), and flows out in larger quantities when the distance is larger (on the right in the picture). This statement is based on my experience. I hope it helps You further.
I lowered the flow multiply to 98 from 100 during the print and the improvement was immediately visible. This makes me think that lowering the extrusion multiplier will fix the majority of the burrs.
As for the bed, it is not level, as I said in the OP. Unfortunately the printer is not mine, so I need to seek permission before permanently modifying pieces of the machine. Unless there is another way, the only thing I can think of to fix the bed leveling is to remove and shorten the plastic tube holding the bolt in that corner.
I’m unfortunately having to train myself with the machine. Aside from a VERY basic 4 step tutorial, it’s been largely learned through 2 days of experimentation and the help of this community. lol
As a result, things like how to calibrate your bed are unknown to me. Though I have been given a veritable catalog of links to tutorials on any number of subjects that I am reading through when able.
@Robert_Gorman_GoGoCh The bed is usually leveled with adjustment screws at each corner (sometimes less). They are very rarely permanently set.
The common method is to bring the nozzle to one corner, and adjust until a piece of paper fits between nozzle and bed with a little resistance when sliding the paper. Then repeat in each corner. Unless your bed is uneven, this should result in a bed that is perpendicular to the Z axis.
Hope this helps.
Turning the screws (back two) and bolts (front two) doesn’t effect the height of the bed on this printer. It has no springs like other models I’ve seen. It’s just held up off the runners by stiff plastic tubes. I can try cranking down on them, seeing if a bit of tension can make a difference, but other then that I need to actually shorten them. Alternatively, if I can figure out how to raise the nozzle, I can loosen the other side to match. I’ll be back at the machine in 2 hours, I’ll post my results.
