New workshop - more progress and photos
I've read here and there that people have had trouble marrying up blast gates and easily available rigid tube. I've just finished the major part of my dust collection system and have found a simple method that may be of help to others.
The tube is standard 100mm OD drain pipe. The blast gates are Axi aluminium ones which have the same outside dia as the tube, so I initially used female to female straight couplers glued on with epoxy to attach them (the usual solvent cement does not work on the ali of course). Late this evening, when finishing off, I found I was short of a coupling, so in desperation, heated up the end of the pipe with a blow lamp and when it was suitably soft and wobbly, forced it onto the Axi blast gate flange. Not only did it go on easily, but when the plastic cooled, it contracted a bit and grips like the proverbial. Just to be sure, I've drilled and fitted 3 small self-tapping screws through the plastic and into the ali to lock it all into position. Bingo !
Here is the rest of the system :
The stub of 100mm pipe to the right is fitted with a screw on cover to allow rodding in the event of a blockage.
Cyclone from Chems at Cyclone central, basic 2HP extractor with cloth bag filter (for now) upstairs on the mezanine where there is lots of natural ventilation. Another blast gate just above the cyclone shuts off the section for the chop saw and the sander. The blast gates have been taped at the base to stop the slight leak, but it is a small price to pay for a gate that can be cleaned out when it fills up with dust !
The pipe leading off to the left then runs along one of the ceiling beams to the TS/Planer/Thicknesser, and that's where the gate I fitted by heating the pipe is located.
The long flexible can reach any of the ports on the Kity machine, and a 3m spare section of hose can be added by just plugging it in to reach over to the lathe for cleaning up after turning.
Notice the shop made cover for the sander - to my surprise and delight, it seems to be almost 100% effective. It just lifts off to change the sanding belt and the suction tends to hold it in position.
The band saw is still in a temporary position, but it has its own shop vac.