Does anyone know the trick of fitting 4" flanged hose-ends into spiral flex ducting? Maybe soften the end of the duct in boiling water or with a heat gun?
Does anyone know the trick of fitting 4" flanged hose-ends into spiral flex ducting? Maybe soften the end of the duct in boiling water or with a heat gun?
Try a 4 inch no hub connector.
Its in the plumbing section and looks like a large hose clamp with a rubber sleeve inside.
It will allow you to tighten on to different diameters with in reason.
I am using 5 inch metal in my current shop but my last one was 4 inch S&D PVC. I'm working from memory but I believe I got a nice tight fit of flex into the female end of the 4 inch PVC - the end where the other pipe can slide in.
If you need to, PVC can be expanded or shrunk with a heat gun. The Oneida super dust deputy can be too.
I used a 4inch HDPE pipe for my collector runs. The fittings from grizzly and others fit ok, but pipe was easily shrunk with heat gun to be tight fit. I did use a single wrap of duct tape to really make things airtight (inside) and if I thought it needed it, a quick wrap of aluminum ducting tape.
Woodworking, Old Tools and Shooting
Ray Fine RF-1390 Laser Ray Fine 20watt Fiber Laser
SFX 50 Watt Fiber Laser
PM2000, Delta BS, Delta sander, Powermatic 50 jointer,
Powermatic 100-12 planer, Rockwell 15-126 radial drill press
Rockwell 46-450 lathe, and 2 Walker Turner RA1100 radial saws
Jet JWS18, bandsaw Carbide Create CNC, RIA 22TCM 1911s and others
These are probably sold somewhere else too, but I remember seeing them here:
https://classicgutters.com/product-c...out-expanders/