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Subject: Re: Any tips for using 5x10 press for veneer and P-Lam?

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Message Thread:

Any tips for using 5x10 press for veneer and P-Lam?

12/16/24       
Matt Member

OK team, we have purchased a 5x10 veneer press flip-top table. This will be used for small quantity layups for quick turnaround whenever required.

This is new territory for us. While I'm familiar with veneering small parts with PVA glue, and large parts with contact spray, using a vacuum table is new.

We have Unibond-One PVA glue on hand, we purchased this along with the table.

Can anyone who purchased a fliptop table for laying up full 4x8 to 5x10 sheets have any experiences or lessons you would like to share here?

Specifically about choices of glue, spreading, etc on these larger sheets.

I am reviewing videos and have ordered Darryl Keil's book on this.

12/17/24       #2: Any tips for using 5x10 press for v ...
tom gardiner

I used to use a flip top press for veneer and plam. It has been a while since I bought a hot press.
I use a 6" hopper type glue spreader - Pfohl I bought from Veneer Systems. I use PVA which works well for veneer and laminate. In a warm shop I was clamping for 20 min - 30 in winter. I don't have enough experience with Unibond to comment.
Use a top sheet between the bag and the laminate. As the membrane pulls around the edges it can distort the plam. You can get a poor bond around the edges.
Keep your top sheets and press platen clean, even small specks of dust can telegraph into a satin sheen sheet.
When applying glue, less is more. The more glue the more moisture. I aim for a consistent thin glue thickness just enough to be shiny not enough to be opaque.
All sheets have to rest open to even air circulation on both sides away from direct heat or fans. I sticker my sheets with a top sheet of even cardboard to let the moisture disipate evenly. Was doing that overnight when cold pressing. Just a couple of hours when hot pressing.
A foot switch to operate the vacuum pump will leave your hands free to tuck the membrane around your work pieces. You can draw a partial vacuum then tuck the membrane then draw down to full vacuum.

12/17/24       #3: Any tips for using 5x10 press for v ...
Matt Member

Tom that is excellent help! Thank you for that.

I am copying your whole post and sharing it with the crew. I'm going to order a foot switch to plug our pump into.

12/17/24       #4: Any tips for using 5x10 press for v ...
Pete

Ive always used a bag and not a flip top press but....Pay attention to the shop temp with unibond. If its below 65(?) it may not set.

12/20/24       #5: Any tips for using 5x10 press for v ...
Tom

I have had a Vacuum Pressing systems Polyurethane 4'x10' bag and pump for 25 years.
We have Glued up P-lam for 20+ years with any good PVA .
Wilson Art #10 white Glue. Titebond has one for HPL & one for Veneer.
We have done 100's of Interior P-lam commercial doors 36" X 80" (stacked up to 3 high).
Left for 2-3 hours in the bag -then overnight before machining.
Goes on 1 11/16" P.B. (Door Blanks) with a grooved bottom platen and a piece of 1/2" Melamine (same size) top platen.
We just use a 1/4" Foam Roller. By them by the dozen local. Paper core ones last about a week+. Find Plastic core if you can..Roller goes in a "Cover" when done.No clean up- Lasts a while .. The Hopper one was to much to clean up-If left out/forgotten... VS. the $1.99 roller
https://www.thepaintbrushcover.com/products/roller-cover


View higher quality, full size image (2400 X 3200)

12/23/24       #6: Any tips for using 5x10 press for v ...
Matt Member

That's excellent help, thank you. I will be looking into the roller covers. We have some rollers from Vacu-clamp but no the covers.

 

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