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Statistics: Posted by SIDRANA — Mon May 04, 2015 10:31 am
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1 - Go bottom-up : Too much work to do and I really like the way the projector can be easely removed from the printer. Too much work and design changes in the printer.
2 - Use a wiper (I will add a wiper eventually) This one is harder to design because the wiper has to be properly aligned with the resin surface and take into consideration the volume change.
3 : Something new. So I figured I could just take something from the flexi-vat design and adapt it to top-down. This way It can be used only when needed and I could afford the risk associated with a vat (sticking to it, deformation of the print).
This was the first quick test using a FEP foil + IKEA container sitting on top of the resin just enough to dip and hve surface contact.
First results were quite good with the only downsides being :
-Bubbles. But they don't seem to mess up the print as when the print resurfaces they are moved away.
-Very messy to work with
This is imho the biggest downside. I am getting fed up with it.-Beacuse of the pressure the foil tends to inflate upwards. I will try with an extra layer of Plexiglas to keep it straight.
The advatages :
-Less presure than on a normal VAT. Less risk of resin leaking from a cheap machine into a very expensive projector.
-Flexibility : It can be a printer that has multiple ways of printing case by case.
-Easier design of the 3d printer.
-The printer can be kept to a minimum size and just put th pojector on top when needed.
-No resin stirring because of outside vibrations .
Here it is in action :
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Statistics: Posted by aurelm — Mon May 04, 2015 7:24 am
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