I needed -- OK, I wanted -- a vacuum chuck for improving my bowl-bottom wor
k. Picked up a small HF pump for $75 (list $139, sale $99 less coupon my w
ife found). Ordered a kit from Harrison Specialties that included the chuck
, an 18-inch pipe to pass through the headstock and a gauge and connectors
for the pump. Naturally, the plumbing fittings needed some connectors, but
it was only one trip to Ace as I brought everything along. Fired it up and
it worked great! Now the test bowl was only about 8-inches in diameter so
it will be interesting to see how the pump holds up to larger projects. A
ll told it was a $225 investment.
You should be fine as long as the item you are making is less than 14.7
pounds assuming the vacuum connection is one square inch. As you get
close to 14.7 pounds other factors will be working on the item and you
may loss it at a lesser weight.
Mine is the type made for air compressors with the solid porous
ceramic filter inside. Just connect the "in" side to the tube going
to the chuck and the
out connection to the vacuum pump. I believe mine has 1/4" pipe
threads. When it looks dusty inside I take the glass cover off and
blow the filter off.
My connection to the chuck uses a air hose quick-connect fitting which
lets the lathe part rotate without twisting the hose. Yours probably
has a more sophisticated fitting.
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