5 hours ago, geert_2 said:I have no experience with soft 3D-printing materials. But soft plastics do not necessarily handle ink better. There are lots of soft plastics that do repell water, like PP and PE, so they wouldn't work at all.
Have you tried treating the surface of PLA-stamps, to accept the ink better? Or try changing the ink, so it adheres better? If you could print in PLA, you would get the best details, I think.
For example, try lightly sanding the stamp surface with fine gritt paper, so it is matte? And try adding a little bit of alcohol to the ink, so it spreads easier onto the stamp?
Thanks for the interest and reply!
I will definitely give the sanding a try. One of the main reasons I was using TPU was it has a certain aesthetic when being used as a stamp: the PLA would offer the same feel if we were say wax sealing an envelop or letter. But I think i'm willing to give that up for the students to have the detail they're looking for.
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geert_2 558
I have no experience with soft 3D-printing materials. But soft plastics do not necessarily handle ink better. There are lots of soft plastics that do repell water, like PP and PE, so they wouldn't work at all.
Have you tried treating the surface of PLA-stamps, to accept the ink better? Or try changing the ink, so it adheres better? If you could print in PLA, you would get the best details, I think.
For example, try lightly sanding the stamp surface with fine gritt paper, so it is matte? And try adding a little bit of alcohol to the ink, so it spreads easier onto the stamp?
The advantage of sanding (or similar treatment) of the print-surface only, would be that the symbol attracts the ink well, while the rest of the stamp repells it. This might give more accurately printed/stamped symbols on paper?
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