Powder dispenser - 24-well array

**Work in progress - hoping to increase the reproducibility; if anyone happens to print this with a resin printer, please let me know how it works out. I'm working on making tighter tolerances with more sanding or having an additional reservoir sitting on top as I'm unsure what is mostly responsible for the variations, especially within same positions. Also open to suggestions for improving the design.**

Device designed to dispense powders (mainly inorganic bases) into 24-well multiwell plate arrays containing glass shell vials (8 mm diameter, 9 mm spacings). Bases are crushed with mortar and pestle and passed through a sieve if necessary, loaded onto the slide plate, scraped into the holes and equalized with the scraper; a little tap is usually needed so that the bases drop through the holes into the vials.

The general idea is that the slide plate is interchangeable to provide various dispense volumes for dispensing inorganic bases in coupling reactions. This specific one was de