I wanted to get the tip right, and the tips I was making just weren't ogival enough. For those going "Wut?" an ogive is the shape of a pointed gothic arch. I made another probe tip because I wasn't sure how this would play out. After the automated two-pass etching process (without roughening) it looked like this:
It's too aggressive. It needs to be less pointy.
It might be fine for depositing teeny little dots, but what we're trying to do is lay down 20μm-30μm lines and build something relatively solid. The catch is that we need to do that without flooding the nascent part with a torrent of resin. The ogival point I created for Probe 10 seemed to do that well.
I ran the second half of the automated etching GCODE that basically tried to etch off the last 2μm at a time. I noticed that it etched off roughly 8μm at each dip, so a lot of dipping time was wasted. I wrote a second piece of GCODE that dipped 5μm at a time and ran that. I took off approximately 110μm of the point and it looked like:
Now this is much more like the desired ogival outline, and the area above the tip is roughened so it should hang on to a layer of resin by capillary action. I'll mount this one in a contact flexure and we'll try it out. [Edit: Turns out I put my monitor on top of the last printed flexure so will have to print another]
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