Core One ASA Corners Warping - Looking for recommendations  

RE: Core One ASA Corners Warping - Looking for recommendations

Warping is controlled by geometry, temperature and adhesion. Before I can give advice, need a lot more information. Like, bed temp, nozzle temp and type, volumetric flow rate, number of perimeters, vendor of the ASA, fan settings. Did the warping happen while it was printing or while it was cooling?

So it's best if you save your project to a 3MF, zip it and attach it.

RE: Core One ASA Corners Warping - Looking for recommendations

"Brim" comes to mind. You mention them but I don't see it in the pictures, please double-check. This usually fixes similar geometry for me.

You might try an actual 3d printing adhesive instead of "glue stick" - I have a small collection of the latter by now. And all but the one I got from Prusa with the printer act as "separating agent" not "adhesive" (even the same brand). One spray can lasts forever, might be your best investment to fix one uncontrolled loose end.

RE: Core One ASA Corners Warping - Looking for recommendations

A random thought: The difference between your old printer and the new one may be the state of the print sheet.

I remember once having a hard time getting the purge line off after a series of maybe a dozen iterations in the same material. It's amazing what adhesion is actually possible (When the sun doth shine and the moon doth glow - And the grass doth grow). Maybe your earlier printer's sheet is just "in the zone" - but probably it's near-impossible to recreate this on demand in a low-tech enviroment. That's why I'm so fond of the spray-can stuff - creates controlled non-cleanliness, not perfect but always the same. And a casual smeared finger print across the purge line area.

RE: Core One ASA Corners Warping - Looking for recommendations

Zip attached.

Bed temp: 110C

Nozzle Type: 0.4 Brass

Volumetric flow rate:~6.8mm^3/s

Perimeters: 3

Polymaker ASA

Fan settings = 0%.

Did the warping happen while it was printing or while it was cooling?  It has happening as the walls start to cool.  So when the bottom is complete, it looks fine, the first few layers of wall start to look fine, then there is a cross over point where the corners start to cool up. 

Brim is 8mm, I removed it in the photos to try and show the warp.  

I also tried this morning to add a 4mm fillet on the right angles to try and help with uniform cooling. That did not fix the warping either. 

RE: Core One ASA Corners Warping - Looking for recommendations

Thank you for the spray adhesive recommendation. I've been using elmer glue sticks since my ender days. Probably smart to look into the spray adhesives now. 

Also - on the build plate - the one I am using is a few years old now.  That's a fair point on the sheet integrity.  With the 3d print spray adhesive pick up, I'll look at grabbing a new sheet as well. 

RE: Core One ASA Corners Warping - Looking for recommendations

Posted by: @laweisen

Thank you for the spray adhesive recommendation. I've been using elmer glue sticks since my ender days. Probably smart to look into the spray adhesives now. 

 

Also - on the build plate - the one I am using is a few years old now.  That's a fair point on the sheet integrity.  With the 3d print spray adhesive pick up, I'll look at grabbing a new sheet as well. 

Polymaker ASA, I've always run into issues with it. Try

• Apply Vision Miner Nano Polymer or Magigoo ASA
• Brim is too small, try making it 14mm and use 0mm for the separation
• Set the first layer speed to half of what you currently have, so 20 or so
• Throw a blanket on the top of the print to crank the chamber temp up a few more degrees. Also, do not skip the heat soak
• Your fan was not actually off, needs to be off completely
• You probably should use either the smooth PEI sheet or a G10 sheet (which is what I use)

I've modified the settings on your project. Give it a try. 

RE: Core One ASA Corners Warping - Looking for recommendations

I never tried Polymaker ASA, but for Prusament or Fillamentum ASA my regular fan speed is 20% ( much higher for bridges and steep overhangs ). No issues with large parts warping, provided I use a brim, adhesive (3Dlac) and a smooth sheet. For small/medium parts a satin sheet is OK and no need to set a brim. My printers have only passive heating and chamber temperature is usually 40-45C printing ASA/PC/PA (never above 50C even in hot summer days ). In fact, I'm against active heating in consumer grade printers for long term reliability, lifespan and safety reasons.  

RE: Core One ASA Corners Warping - Looking for recommendations

Please compare your values from the 3MF file with the values specified by Polymaker for ASA.

Just as a tip, ABS and ASA are in the middle range in terms of warping. PETG is manageable, ASA is difficult, and nylon is the top class.

ASA must be printed hot and slowly. A consistent temperature in the chamber is also important.

RE:

Too fast in the lowest layers.

This is where your wrapping is created! (Please click on the image to view it in full)

RE: Core One ASA Corners Warping - Looking for recommendations

Ran the shared project.  Definitely helped the overall warping.  Very small amount of warping in the corners still but much improved. 

I'll try the lower speeds in the first few layers next and double check the settings vs. the polymaker suggested.  

RE:

Posted by: @laweisen

Ran the shared project.  Definitely helped the overall warping.  Very small amount of warping in the corners still but much improved. 

I'll try the lower speeds in the first few layers next and double check the settings vs. the polymaker suggested.  

Definitely an improvement. For one of my projects I recently switched from PC Blend to Prusament ASA because it's half the price. But then I'm finding it to be twice the headache. I'm probably going to switch back to PC Blend because I have better control over warping.