Thread: building a vac press for veneering part 1 part 2

whats wrong with those vacuum bags your meant to put jumpers in, and pillows etc.
I've used them for veneer and mounting paintings to board.
You can get them in various sizes for a few bucks (junk shops).
Not so good if you want to use it many times over and over.

I don't seem to have access to these and i was hoping for something that i could re-use over and over

you still have them under the original name of "space bags".
But out chneese copy shops have all sizes for 3-4 bucks each.

amazon had these suit ones Amazon.com - Space Bag # BR5420-6, 2 Jumbo Vacuum Seal Storage Bags, Each, Clear, (35" X 48") - Space Saver Bags
And you can use them over and over, I've had holes and you just put tape on the insideover the hole.
Not as commercial as what your building.

how did you connect the vac pump to the bag and how did you seal it

they have a zip lock end. Just the same as the sandwich bags.

These are just larger, double thickness and have 2 zip lock strips.
You can get pillow size, right up to 90cmx120cm.

You pull it open and push together the 2 rows of sealing strips.

To remove air they have a one way valve in the side, meant to be used with a std vacuum cleaner.
Which works for most things.

I have used my vacuum pump on it, Used a cork and drilled a hole to put vac pump hose thru.

Then when its time to release you unscrew the one way valve and it lets the air in.

Go check your local $2 shop, ask for vacuum storage bags.
They must have them in various sizes.

I assembled everything bolted screwed calked sealed etc,
I used vapour varrier 6ml for testing,closed up the frame hooked up the vac and it failed
it was drawing very little vac,i was very disappointed,I took everything apart seals inner
frame and then just placed a piece of vapour barrier on the mdf table over the
oring seal
,closed the frame drew a vac and it worked.Too simple built all that extra stuff for
nothing
Its working great ,i will now start serious shopping for vinyl or polyurethane
sheeting

building a vac press for veneering part3 - YouTube

I pulled a vac on everyhting ,including my hat
I am pleased