Darryl Keil Last Activity 2025-09-09 11:09 AM
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Martin Gottlieb

 
Subject : portable work surface
Posted : 2001-03-12 12:53 PM
Post #30030
I would like to create a portable work surface by vacuum bagging some thin plywood (1/8") to either side of a hollow core door. How many inches of mercury can I pull with my pump without crushing or damaging the hollow door?



 
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Martin Gottlieb

 
Subject : portable work surface
Posted : 2001-03-13 11:47 AM
Post #30036 - In reply to #30030
: I would like to create a portable work surface by vacuum bagging some : thin plywood (1/8") to either side of a hollow core door. How many : inches of mercury can I pull with my pump without crushing or : damaging the hollow door?Thanks Darryl!That is one heck of an obscure fact. I came to the right place.




 
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Darryl Keil

 
Subject : portable work surface
Posted : 2001-03-12 8:49 PM
Post #30034 - In reply to #30030
Dear Martin,Hollow core doors crush very easily as some of my customer would attest to. You would be surprised how little honeycomb is in the core. I would go no higher than about 12HG. At such low vacuum you will need to use either epoxy or polyurethane to get a good bond. Regular yellow glue or urea resins will not bond well at these pressures.SincerelyDarryl Keil: I would like to create a portable work surface by vacuum bagging some : thin plywood (1/8") to either side of a hollow core door. How many : inches of mercury can I pull with my pump without crushing or : damaging the hollow door?




 
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Ed Milne

 
Subject : portable work surface
Posted : 2001-03-12 2:13 PM
Post #30031 - In reply to #30030
: I would like to create a portable work surface by vacuum bagging some : thin plywood (1/8") to either side of a hollow core door. How many : inches of mercury can I pull with my pump without crushing or : damaging the hollow door?Darryl will have to answer the numbers question, but maybe you could fill the inside of the door with an expanding foam - it shouldn't add much weight, but ought to hold up under the vacuum.
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