Getting the first layer to stick
Posted: Tue Aug 04, 2015 7:44 pm
Hello.
I made a top down DLP printer, and am having problems making the first layer stick to the build platform.
Five to ten layers in, corners would unstick and warp up.
I'm using MakerJuice G+, red.
Platform is stainless steel, with 4mm holes drilled in it every centimetre or so.
More exposure on the lower layers make them warp faster.
Much more exposure make them warp and smoke.
Less exposure makes the layers come apart or be incomplete.
Slowing down the dip have no real effect, it still unsticks, only slowly.
The unsticking seem to be sudden, while the corners are still flexible. It happens within one or two layers.
What can be done about it?
I looked around blogs and forums, but most of it talks about bottom-up, or suggests things i already tried (listed above).
Also, if there is some wiki or similar place that lists SLA know-how as good as in the places with FDM know-how, then i'd love to hear about it.
I made a top down DLP printer, and am having problems making the first layer stick to the build platform.
Five to ten layers in, corners would unstick and warp up.
I'm using MakerJuice G+, red.
Platform is stainless steel, with 4mm holes drilled in it every centimetre or so.
More exposure on the lower layers make them warp faster.
Much more exposure make them warp and smoke.
Less exposure makes the layers come apart or be incomplete.
Slowing down the dip have no real effect, it still unsticks, only slowly.
The unsticking seem to be sudden, while the corners are still flexible. It happens within one or two layers.
What can be done about it?
I looked around blogs and forums, but most of it talks about bottom-up, or suggests things i already tried (listed above).
Also, if there is some wiki or similar place that lists SLA know-how as good as in the places with FDM know-how, then i'd love to hear about it.