Print ABS in vase mode w/o chamber?

o_lampe

Hi gents,
I rarely print ABS, so none of my printers has a (heated) chamber.
Is it still possible to print a tall object in vasemode? Or will it crack even faster?

THX
Olaf

deckingman

@o_lampe I've been printing a lot of ABS and ASA recently without a heated chamber as such. Having said that, the printer does sit inside a closed "booth" which does get a bit warm (up to about 40 degC after a couple of hours or so) with latent heat from my largish heated bed. The only issue I've found is that corners can lift after 4 hours or so. I've been running the bed at 90 degC so maybe a bit hotter would help. Inter layer adhesion has always been good. I suspect that keeping the printer free from cold draughts might be more important than chamber heating as such.

o_lampe

ABS was a NoGo, it was too humid and crackled like a campfire...
So I tried HIPS, which has far less warping and similar environmental capabilities.
I couldn't make it stick to Pertinax with the bed temp I wrote on the spool, when I bought it.
(50-60°C bed, 220-230°C nozzle)
So I started the print with PLA and then changed to HIPS. Seems to work, but I'm only halfway through the 450mm tall vaseprint. (airfoil to be exact)

Norder

@o_lampe
I mainly print ABS and Nylon.
As @deckingman correctly mentioned, ABS does not like drafts, you should also do without the fan and if so, then only work with some cooling on overhangs.
Large objects are also no problem.
But I think it depends on the ABS itself whether the pressure is successful.
I use ABS-X from Minadax and rTitan from FormFutura.
rTitan is recycled TitanX, which is cheaper through recycling.
ABS-X and rTitan have Warp-Free technology and do not smell.
I still have a cheap ABS from China, but you can't print it without extraction, the gases constrict your throat.
I print ABS and Nylon with no enclosure, but with the window closed and no fan.

MJLew

@Norder I also recommend TitanX. It costs more than plain ABS but I need fewer attempts to get good prints. More than worth it to me.

mrehorstdmd

@o_lampe How tall is tall?

I have found that ABS printed in vase mode works OK without a heated enclosure, but line width matters. I've printed with a 0.4 mm nozzle up to about 250 mm high without problems.

If you try to print a very tall object with a narrow line width, the object will distort because of its own weight and eventually the nozzle will miss the previous layer.

If you try to print a vase with straight sides (like a tall rectangular shape) the sides will be wavy due to the plastic shrinking as it cools. Curves are best.