Blobs & zits advice
Good Afternoon,
I've been using my Prusa Mk3's for some time now, and generally have no isse, but there is one job that is currently driving me nuts.
I am printing out a box, in PETG, and am getting lots of randomly placed blobs and zits on the inside wall. In the past I have had this problem, and then managed to align the blobs so I can easily cut them off with a sharp chisel knife. However, I seem to have lost that particular part of my mojo.
I have tried the 'Align' option under print settings/seam settings, but this doesn't do the trick. I know there is a way of achieving this, I have just completely forgotten how. In essence, I can handle the blobs and zits, but I am trying to get them in a straight line to make the post processing quicker and easier. I have also tried the paint-on seam tool, again with no luck.
Thanks in advance for any advice,
Andy
RE: Blobs & zits advice
Save your current 3MF project file, zip it up, and attach it to a reply here so we can see your part & settings and give better recommendations.
RE: Blobs & zits advice
I'm afraid that I can't post pics or upload files, as this part is subject to a non-disclosue agreement.
I was hoping it'd be a bit more straightforward in terms of remedy, as someone else must have seen this issue.
Thanks anyway
RE: Blobs & zits advice
how about applying the problem to a sample model, as I am all to familiar with non-disclosue agreements, it's how we sometimes communicate a problem to our vendors.
The real problem is we don't know what the issue could be, as you have given us nothing to go on.
Good Luck,
Swiss_Cheese
The Filament Whisperer
RE: Blobs & zits advice
If the zits and blobs are getting worse, it is likely that the PETG has become water-soaked and drying would help. The only reliable alignment is the "rear" alignment.
My general tips for printing PETG
-Use fiber filled PETG if possible, there is significantly less stringing and warping with the addition of fibers
-A micro swiss nozzle with its slippery coating will greatly reduce the buildup of PETG around the nozzle
-Printing with zhop enabled will reduce the buildup of PETG around the nozzle but it will increase stringing