DIY 2-Way Gravity Bong

Project Gravity
My goal was to make a safe-to-use and easy to clean 2-way gravity bong, inspired by Stundenglass’s Gravity Infuser, for a cheaper cost than theirs. This is how I did it.
I started off by finding glass jars that seemed to be an appropriate size. I choose chemical free glass jars with stainless-steel lids. Then I went to Menards and bought a few planks of maple wood. I cut 3 circular 1" thick disks. For 2 of those disks, I cut a hole through the center for a light and cut a slot on each side for the supports (which I also cut out of maple wood). I secured 3 disks and the supports together with a wood sealant I found at Menard’s. I added a thin layer of particle board on the bottom of the base and sanded down all the exterior wood surfaces.
I then sized and ordered the appropriate toxic and lead-free brass pipes as well as a few stainless-steel nozzles. I cut the supports to an appropriate height and carved a crevasse for the main pipe to fit. I then cut a similar crevasse in 2 pieces of scrap wood and attached it on the top of the supports with hinges so that it is capable of opening for removal of the pipe.
I designed (CAD) and ordered the center piece from Xometry out of a high temp, food grade polypropylene. This piece did not turn out exactly like I designed (such as they cut the center hole not in the center), but it will work. I sanded down the main pipe so that it would fit, and the fit ended up near perfect. I also cut the flow holes through the brass pipe. 3 holes on the top and 2 holes on the bottom. I cut 3 corresponding holes on each of the jar lids.
Once it all fit together nicely, I sanded down the surfaces and prepared them for bonding. I put a thin layer of plastic glue over the polypropylene surface and a thick layer of steel laced epoxy on the stainless-steel lids before taping them together for 24 hours. I was careful not to get any glue or epoxy near the flow holes. I then ordered 2 standard 14mm bong down-stems and attached them over the appropriate holes with a high temp, food grade, pure silicone paste. I used this same paste to attach a 14mm glass bowl adapter to one of the stainless steel nozzles.
I cut 2 silicone balls (toxic free) and used them as blockers between the flow holes within the main brass pipe. After the first tests, it was clear more sealant was needed. So, I added additional silicone within the pipe and tight rubber washers on the exterior of the pipe. The piece worked much better after these additions and I began painting.
Overall, I spent around $240 on materials and tools (and had plenty of leftover materials), saving over half the cost compared to buying a popular selling 2-way gravity bong.
After these videos, I added more sealants by covering the edges in food grade silicone paste, and it works very well, but there is still one slow drip (about 5 drips per rotation) from around the edges of the rubber washers. I have been using it without an issue even with the drip, but I am open to suggestions on how to make this completely water tight while still being able to deconstruct it for cleaning.

The beat in this video was made by a friend of mine, contact me for usage rights.
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-CloudyP