My progress:
Obviously this is not a finished product; in fact, I might redo the Lexan top.
Tools: 3-axis NC mill, Pencil grinder, Air motor with cutoff wheel, Dremel mounted in Router Table, 3/8" NPT tap, Sandpaper 600-2000 grit.
Issues with current proto:
- One thread is counter-threaded, causing barb to sit slightly crooked. Possibly not making a watertight seal either.
- Flow manifold ( channel connecting barb to fin pocket) too wide, water is not channelled evenly.
To be done:
- Create second flow manifold
- Drill clearance for bolts into Lexan top
- Tap baseplate for bolts to Lexan
- Tap baseplate for bolts to coldplate
- Cut barb threads down so they sit flush when threaded in
- Bolt and seal top to base with Marine Goop
- Lap base flat on calibrated granite slab
- Thread in barbs with Teflon tape
- Leak test
After I finish the second flow manifold with the pencil grinder, I will know whether or not I need to make a new top.