Well been a little slow here so thought I would post my latest adventure in the shop. I am in the process of building a vacuum chucking system. It will draw from 24" hg to 27" hg. I have the cart built and have already started mounting hardware. I have gotten the handwheel adapters for the Nove DVR XP and the Jet 1220 so I can use it on both lathes. The chucks are built that will screw onto the headstock spindle and have the vacuum spindle adapter that will plug into the handwheel adapters. The vacuum pump is a diaphragm pump. I still haven't received the parts which include the hose, hose barb connectors, vacuum gage, filters and the bleed off valve. Hopefully will be here next week.
So what happens is that I have a bowl finished turned except for the bottom. I unscrew the chuck with the bowl still in it. I put the chuck on a adapter in the tailstock. I bring the tailstock up till the bowl rest against the vacuum chuck. Put a slight amount of pressure with the tailstock and turn on the vacuum. It will suck the bowl tight which is perfectly centered and then I can remove the chuck and finish turning the bottom giving me full access to the bottom without the tailstock in the road. When completed and sanded I open the bleeder valve slightly and release the bowl. It is then ready to finish. I will post pictures when it is up and running to give a better view of what is happening. The vacuum chucks are made up of PVC (3" chuck, 4" and 6") glued into a piece of scrap wood. It has a 1 X 8 nut epoxied on the back for the Jet 1220. I have a different set of chucks I bought for the Nova DVR and will post pictures later. Enjoy the pictures I have so far.
To succeed in life, you need three things: a wishbone, a backbone and a funnybone.
Last edited by BernieW; 02-20-2010 at 05:27 PM.