This soon to be Speedy 360 owner is trying to get all her ducks in a row in anticipation of embarking on some awesome laser projects. However, the current project is the laser exhaust setup. The laser will be in our garage with the exhaust fan outside in a modified deck box (many thanks to all those that have posted detailed photos of similar setups!). Waited to purchase the green 1hp Harbor Freight fan until this week's 20% off discount, score!, and today Woodcraft has $4 shipping so I was putting together an order of blast gates, Duravent smooth interior hose, and flange fittings but the size and configuration of the exhaust ports on the 380 has me perplexed.
The Speedy 360 manual shows two 75mm exhaust fittings on the back of the unit. Everything else I was going to use 4in pipe so am wondering what reducer people use to hook up their 360's and how you handle the dual ports? (I am getting the vacuum table). I'm thinking to also include blast gate(s) as close as possible to the unit to close off any residual odors that may remain in the pipe.
Planning on going out a nearby window, total run to the fan outside would be about 12 to 15ft, and I'm considering using 4in PVC pipe for some of the straight run inside the garage. Was also planning on using smooth interior flexible duct hose for the few 90 degree bends, and maybe the removable run from the window to the deck box fan attachment (approx 6ft).
Looking for recommendations, especially on how best to handle the two 75mm exhaust ports on the Speedy 360. Thanks!!!!!