Well you know what inspired such an idea! Yes, the Peachy printer. So I used liquid, but not water. I found properties of glycerin while experimented with pigments. Ordered some set of local pigments designed for home soap making. And they was mixed on the glycerin base. And that pigment with glycerin in no means wanted to mix with the resin no matter how well i stirred it. So then I thought - why not to try it instead of PDMS? It is very cheap, say few dollars for 100-200 grams.
But then I thought - if B9C will act as usual it will be a mess. I need to overcome sliding in some way - it need to be still. First I thought of disassembling entire sliding mech and coupling sensor with motor arm separately so that while it will move, it will "close" the contacts of the sensor. But I found simpler solution :)
On photos you can see it. I just lifted VAT up on the pencils so that VAT sliding mechanism will freely open/close beneath the "lifted" VAT




