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PVB as soluble support  

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neroes
(@neroes)
Eminent Member
PVB as soluble support

hi i print minis and was thinking of getting an MMU for soluble supports, but BVOH seems expensive and i have high levels of humidity so it would be a pain if my filament dissolved on my shelf between prints, which got me thinking, could i use PVB as support material?

if so how would it impact print quality and how much does the waste product kill mother nature?

edit. i am aware that PVB also needs a drybox, but since it doesn't litterally disolve from water i'm guessing it is less of an issue for PVB

This topic was modified 6 months ago by neroes
Posted : 19/06/2021 10:21 pm
ssill2
(@ssill2)
Noble Member
RE: PVB as soluble support

bvoh works fine.  wouldn't the amount of IPA required to desolve supports on a reasonably sized print be expensive too?  I've not used PVB so I don't know how quickly it dissolves in IPA, but since IPA tends to evaporate wouldn't you have to put the part in a sealed container with the IPA in order to have it dissolve?

Oh, and IPA is flammable....  especially 99% lol

My big grievance for solubles at the moment is that the wipe tower tends to not do well with solubles.  I did find a kludge that works though.  You can get a spool of BVOH from Prusa shop for less than 100 shipped to the us, including shipping.

Posted : 25/06/2021 4:52 pm
neroes
(@neroes)
Eminent Member
Topic starter answered:
RE: PVB as soluble support

@ssill2

another recommended i check out HIPS which should be even cheaper and able to disolve in lemon juice

Posted : 25/06/2021 5:24 pm
ssill2
(@ssill2)
Noble Member
RE: PVB as soluble support

as far as I understand it HIPS is primarily for ABS

https://www.simplify3d.com/support/materials-guide/hips/

 

Posted : 25/06/2021 5:29 pm
neroes
(@neroes)
Eminent Member
Topic starter answered:
RE: PVB as soluble support

i plan on printing the minis in ASA so should be fine

Posted : 25/06/2021 9:01 pm
ssill2
(@ssill2)
Noble Member
RE: PVB as soluble support

There you go.  Sounds like hips is the way to go.  I've only done about two prints with ABS, none with ASA, I do have some hatchbox lime green ABS I wanted to print my next prusa printer's parts in lol

 

Posted : 25/06/2021 9:40 pm
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