You will need a small hot plate, you can get this at wally world or other store.
Enough 1"x 6" x 3/4" to build a 12" OD square frame. DSCF0537.JPG 352.49K 287 downloads
We are going to use a shop vac for our suction.
One 1" x 6" x 4' piece of pine lumber
One 1" x 4" x 4' piece of pine lumber
Four 3/8" x 2" flat angle braces
16, 1/8" x 1/8" Plaster of Paris rivets with back up washers.
One piece of thin scrap wood, plastic or other type of material 10" x 10"
One piece of what is called punch plate for vacuum bed top, 10" x 10"
Some silicone caulk, some tape, (I used alum. tape) 16 dry wall screws 1 1/2" long
OK, lets get started by building a 12" x 12" box for the hot plate to set in.
Using the 1" x 6" lumber cut 2 pieces 12" long and 2 pieces 10 1/2" long.
Cut a small notch in one of the boards for the hot plate cord to come through
this will become the bottom of the box.
This box is screwed together with the dry wall screws. Screw the 12" pieces
to the 10 1/2" pieces. DSCF0539.JPG 283.46K 111 downloads DSCF0541.JPG 259.49K 124 downloads DSCF0547.JPG 193.95K 111 downloads DSCF0548.JPG 242.14K 134 downloads DSCF0550.JPG 209.06K 154 downloads
Now lets build the vacuum bed.
Using the 1" x 4" piece of lumber, cut 2 pieces 10" long and 2 pieces 8 1/2" long.
and screw the 10" pieces to the 8 1/2" pieces using the dry wall screws.
Before screwing the last piece on use a hole saw to cut a hole in it that will fit your
shop vac. DSCF0542.JPG 231.75K 161 downloads DSCF0554.JPG 216.33K 141 downloads
The bottom of this hole should be about 3/8" from the bottom of the box we are building. DSCF0554.JPG 216.33K 141 downloads DSCF0555.JPG 205.56K 161 downloads
We are also going to tape the 10" x 10" piece of whatever you use on the bottom of the box.
We will then caulk the seams inside the box. DSCF0556.JPG 239.24K 213 downloads DSCF0557.JPG 228.61K 230 downloads DSCF0559.JPG 195.03K 273 downloads
Now tape the punch plate on top of the box. We now have our vacuum bed. DSCF0564.JPG 257.55K 287 downloads DSCF0561.JPG 279.21K 301 downloads
Now we need to build an angle iron frame with a 10 1/2" inside dia.and a 12" outside dia.
I think the pictures will explain this. The frame will match the 12" box perfect and slip down over the 10" box. DSCF0566.JPG 267.19K 256 downloads DSCF0567.JPG 170.74K 274 downloads
Use the 3/8" x 2" flat angle braces on each corner, attach with the Plaster of Paris rivets and washers. DSCF0572.JPG 281.11K 285 downloads DSCF0573.JPG 212.33K 338 downloads DSCF0575.JPG 321.16K 434 downloads
Add a couple handles from a piece of dowel.
This completes the construction process
Now to use this, cut your plastic to form 12" x 12" and attach to the alum frame with the binder clips. DSCF0578.JPG 244.43K 653 downloads
Place your models on the punch plate, I use baits cut in half, and get a good right and left side.
Set the temp on hot plate about theree fourths of the way, not on high.
I have had not a fire but, i guess you could if it got too hot.
Place the plastic in the frame over the hot plate and start the shop vac.
The plastic will sag at first then tighten up then sag again, it is time to place it over the vacuum bed. DSCF0582.JPG 258.04K 811 downloads DSCF0583.JPG 210.48K 835 downloads DSCF0586.JPG 282.79K 734 downloads DSCF0587.JPG 260.75K 663 downloads