Comment on I like big beds and I cannot lie, pt 2. Any hints to improve ASA adhesion?
TwanHE@lemmy.world 7 months ago
What chamber temp are you using for such a large part? I’d recommend at least 70+C but that might be hard to reach with acrylic panels.
Your bed will also warp due to the heat since its rigidly mounted.
IMALlama@lemmy.world 7 months ago
For the black PETG part I doubt it got that hot, but I’m sure it was above ambient by 5-10 degrees C. 70 degree bed and my filter/bedfan combo at 30 percent.
For the ASA part, I let the printer soak after the bed hit 100 C with 100% bed fans. I’m not sure what temperature the chamber reached due to not having a thermostor.
Do you think the ASA print would have succeeded with a hotter chamber? If yes, I’m all in on adding some more bedfans, a chamber thermostor, and swapping some panels for better insulating ones. I’m trying to figure out if there’s a wall to what you can reasonably expect from ASA or if there’s still some low hanging headroom that could be unlocked with better heating.
TwanHE@lemmy.world 7 months ago
ASA and ABS definitely do better at elevated chamber temps. What temp is enough I can’t say but I still saw improvements when going from 50 to 70c. Higher temps also let you use more fan speed without the added risk of warping so you’ll probably see better overhangs even though the temps are higher.
Id start with adding some chamber temp sensors first so you can measure what difference you are making with the other mods.
Using 4 mm abs panels I saw about a 15c improvement by just throwing a fleece blanket over the printer, so that might be an easy fix if you don’t print large parts frequently. Although higher temps are also great for layer adhesion on smaller parts.
IMALlama@lemmy.world 7 months ago
Thanks for the feedback. I’m thinking a mix of thermostors, two more bedfans, and better insulation is my next step for less ASA warpage.