ABS and support

[Labern 775]

I am quite new to printing with abs and I'm trying to print my first model that requires support.

Using the default Cura abs profile which prints at 0.1 layer height with a million different speeds settings at 230degees. Printing with UM3 and new white and that has the RFID tag thingy.

I covered the front of the printer and put a box over the top to keep it nice and toasty.

Grid support turned on.

So the problem is one area of the part should be printed onto the support but it's not sticking at all to it at all and is just curling up.

Any tips on getting this to work.

[neotko 1,417]

Umm not sure, but what support PVA? I ask because PVA doesn't work with ABS.

[gr5 2,270]

Use ABS support with ABS print. Don't use PVA.

[Labern 775]

I am using abs support with abs print.

Not interested in buying hips.

[neotko 1,417]

Ok so ABS, on ABS... So when it prints on the air, because I suppose there's a z gab between the support and the print, it curls up and doesn't get 'supported' so the print is ruin.

I think the issue could be an excess in temperature. ABS need's high temps around, but as any plastic it need's to cooldown to stop moving, so maybe, for the critical part, you could set some fan for that Z layers (I suppose Z plug still works on this 2.3.x curas?) To force the ABS to remain at the good temperature and stop curling. Afaik, ABS only problem with fans, is that if the temps goes down too much it suffers from delimitation or bad layer adhesion, so if you have the front door and the top cover, the inside temperature should be enough to not damage the print, while the air would just move the printed filament from the 230C print temp to an stable 80C inner print area temperature?

[gr5 2,270]

I'm thinking the Z distance in the support settings is too far and should be set to zero maybe? I'm not sure of the answer @Labern. Definitely fan can help overhangs in general but this is supported so I'm not sure. With ABS never do 100% fan. 30% is plenty of fan for ABS and enclosing your printer definitely helps a lot so keep doing that.

Maybe you should try a small test print to try different support settings - something that only takes 15 minutes to print.