mike hide (in laKdnQEZYca4f97enZ2dnUVZ firstname.lastname@example.org) said:
| I have just got a new large vacuum veneering bag. I am using an old
| frig compressor as a pump . this compressor will pull 25" of vacuum
| easily .
| the problem is sealing the bag . I have tried the two boards with
| sealing tape , the pvc pipe method a la taunton veering book and
| the two boards with a 1/2"dowel glued insert .....all top no avail
| .the pump will not pull any vacuum at all because I cammot get a
| decent seal .
I've worked with vacuum clamping and not with veneer pressing; but
would like to suggest laying out a strip of _closed_-cell
weatherstripping (1" wide, any thickness) and folding it lengthwise
over the end of the bag you want to seal (no wrinkles allowed!). Leave
a quarter-inch or so between the end of the bag and the fold and trim
the foam so it protrudess about a half-inch beyond the already sealed
sides of the bag.
Then clamp a pair of 1" small boards over the entire length of the
foam to maintain the closure.
The weatherstripping should seal well to the plastic, and _really_
well to itself. It's inexpensive and readily available. Make sure that
what you use is closed-cell.
The weatherstripping should do the job. It's what I use to provide the
seal on my vacuum pucks with good result. When you're done, remove the
boards and the weatherstripping is easily removed.
DeSoto, Iowa USA