Partial infill possible ?

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Hugues
Posts: 82
Joined: Thu Oct 02, 2014 3:20 pm
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Partial infill possible ?

Postby Hugues » Wed Nov 19, 2014 3:06 pm

Hi guys,

been reading about DLP for a while, on this forum and elsewhere.

Still one thing (actually many) that is not clear for me. Can we use partial infill with resin and DLP ?

Seems that most people use 100% filled or shelled, but can we use partial infill like in FDM ? To save on resin ?

I read that you cannot do it because resin cannot escape the inside of the part. But i'm having problem to picture this.

Let's say you want to print a cube at 50% infill, and your infill pattern is just a grid, superimposed at each layer. So you have square tubes inside your part, except the first 3 and last 3 layers. When your part is almost finished to print, before the last 3 full layers, the resin inside your part can escape, right ? If you do your last 3 full layers with the minimum resin in your vat, you would end up with a bit of resin inside the part, but not completely filled either, right ?

Or is it that resin cannot really escape due to capillary effect of these small square tubes ?

Surely i missed something here.

hp_
Posts: 301
Joined: Tue Dec 24, 2013 10:25 am
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Re: Partial infill possible ?

Postby hp_ » Wed Nov 19, 2014 4:12 pm

hi Hugues,

you are correct about the capillary effect, the resin is just filled halfway into an object.

cheers,
hp


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