On Monday, October 16, 2017 at 8:03:30 PM UTC-7, JS wrote:
On Monday, October 16, 2017 at 6:47:55 PM UTC-7, wrote:
I just installed a very cool - pun intended - air extractor in my ASW19.. Its a nifty device that replaces that little hatch cover where the control connections are. My guess is that it was made on a 3D printer. Anyway, I couldn’t believe how well it worked and so I’m putting a shameless plug for that thing here. I got it from an outfit in the UK called LJ Panels. I don’t often get carried away raving things, but this one is the cats meow.

Is it anything like the ones that Paul Hanson sold years ago?
Jim

They are similar, but they adopted the dual 'louver' type outlet the Jonkers team came up with. No form on treatment on the interior. Te parts are laser sintered nylon so finish is quite rough (something between sandstone and wood) until primed/sanded, though some Polyprimer and sanding would make them really nice.

My guess is they work at least as well if not better due to having higher surface area with the double outlet even with the forward louver is partly blocked by the attach point, though likely to make a bit more noise with the air hitting the outlet without any organization taking place on the inside..

Wish I would have made my test pod to quantify this stuff, but never did though I do still make/sell the hatches I have been in fiberglass, prefinished with PCL 907 white to a #320 grit