brucethehoon
Posts: 10
Joined: Fri May 10, 2013 10:51 pm

[ADDED] Dense support layers at top

I do quite like using dissolvable supports. I've used HIPS and a sadly likely never to be seen product that Filaco/Village Plastics was working on that was like PVA but actually good. Now I'm rationing my beta tester spool like it's gold...

One thing about dissolvable supports vs breakaway supports comes up all the time, however. When using breakaway, a 40% density is pretty good. Not too much contact, so not too much stress over removal. Less material used. All that. The issue is that when using that kind of support with filament that's designed to be dissolved is that you're not getting the best possible surface result. For instances where I've REALLY needed a perfect bottom surface that's supported, I've modeled in a support that's done at 100% infill. It leaves a solid surface for the main filament to hit and means that I've got a cleaner surface in the end.

One thing that I'm guessing would not be trivial at all to create, but would be a MASSIVE increase in quality for users like me would be supports that are "standard" supports all the way up until reaching the 1mm below the part they're supporting at which point they'd become 100% infill. A kind of contoured cradle that would be exactly the shape of the bottom surface instead of the scaffold. Then, when going to process the part, I'd break away the traditional supports, leaving the solid bit to be the only part needing to be dissolved. I suppose I could just model this, but I can only think of a few projects where it would be worth the effort to do all the extra modeling.

Does anyone else think this is a good idea? Am I missing an obvious flaw? Thanks!
User avatar
jimc
Posts: 1124
Joined: Wed Aug 28, 2013 11:02 pm
Location: mullica, nj
Contact: Website

Re: Feature recommendation: supports

+1
paradigmcmi
Posts: 9
Joined: Thu Feb 20, 2014 12:26 am

Re: Feature recommendation: supports

+1 x 1000
rsilvers
Posts: 62
Joined: Mon Feb 24, 2014 10:45 am

Re: Feature recommendation: supports

http://slic3r.org/releases/1.1.0

Slic3r has supports that get solid at the top.

Yes, we need that.
lejeanmi
Posts: 2
Joined: Sat May 17, 2014 2:51 pm

Re: Feature recommendation: supports

Excellent description of what is needed!
Please, please, please make this part of the next release.
lejeanmi
Posts: 2
Joined: Sat May 17, 2014 2:51 pm

Re: Feature recommendation: supports

While you guys are at it, add a default profile for HIPS and then we're all set!
davedfx
Posts: 40
Joined: Wed Dec 25, 2013 10:54 am

Re: Feature recommendation: supports

+2 on this.

Other software like UP has this and it's very useful!

100 % support for clean bottom side is a waste of material as of now.

For now, I'm using a profile with 90, -90, 45, -45 at 40 % or lower to make a denser support without using more material.
davedfx
Posts: 40
Joined: Wed Dec 25, 2013 10:54 am

Re: Feature recommendation: supports

Image

This is what we want. Solid at top of the support.
marcnicol
Posts: 12
Joined: Thu Jan 23, 2014 6:52 am

Re: Feature recommendation: supports

+1
3ntrlab
Posts: 8
Joined: Thu Feb 20, 2014 4:30 pm
Location: Oleggio, Italy
Contact: Website

Re: Feature recommendation: supports

+1E9
Professional 3d printers : http://www.3ntr.net

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