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Save that frame!

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  • Member since
    April, 2007
Save that frame!
Posted by Leddy on Tuesday, January 09, 2018 12:04 PM

I am building a diorama in a wood frame and plan to put celluclay over posterboard in the frame?  How can I waterproof the frame so it will not warp from the moisture effect of the celluclay where it touches the wood frame?  I would like the treatment to dry clear.   I would appreciate any suggestions!

thanks, 

Leddy

  • Member since
    January, 2009
  • From: hamburg michigan
Posted by fermis on Tuesday, January 09, 2018 12:52 PM

I have no experience with celluclay, so I don't know how wet it is. I usually use drywall plaster, and have not had any problems with it effecting a wood frame. I would emagine that a frame that has been treated with a clear coat, as most seem to be, would offer at least some waterproofing (???). 

 If I were really worried about it, I'd probably wrap the frame with plastic wrap/cling wrap type stuff. I'd continue on, leaving the wrap in place to protect the frame, until everything is done. Then, use a new blade to cut the plastic wrap right where the "ground" meets the frame.

  • Member since
    April, 2007
Posted by Leddy on Wednesday, January 10, 2018 10:32 AM

To protect the wood frame from the wet celluclay would it be better to use lacquer clear coat /dull cote OR a brushed urethane coating?  I want the exposed frame to stay uncolored.  Thanks for your ideas,

Leddy

  • Member since
    December, 2002
  • From: Bury St Edmunds, Suffolk, England
Posted by Bish on Wednesday, January 10, 2018 4:07 PM

Will you be attaching the frame to the poster board, and how thick is the poster board. If the frame only stands above the board a little you should be fine. I make a frame from balsa wood around a wooden base and never have any issues, but the frame only goes a couple of mm's above the base.

''I am a Norfolk man, and i glory in being so''

  

On the bench: Tamiya 1/72nd Bf 109E-3

  • Member since
    April, 2007
Posted by Leddy on Wednesday, January 10, 2018 4:39 PM

The poster board will be glued in the frame.  It is 1/4  inch thick and Frame rises about 1/5 inch above top of board but it is beveled away from the poster board top.  Do you think I need anything or maybe just a lacquer clear coat?

  • Member since
    December, 2002
  • From: Bury St Edmunds, Suffolk, England
Posted by Bish on Wednesday, January 10, 2018 4:46 PM

I think you should be fine from what you say. As long as the frame is glued all the way round, the board should hold it in place. I only stain and varnish my balsa wood on the outside and don't do anything where it touches the celluclay.

I have put celuclay onto a narrow piuece of pine shelfboard and despite sealing it, it still bows. You could add the lacquer to be safe, but i think securing it to the base is the most important thing.

''I am a Norfolk man, and i glory in being so''

  

On the bench: Tamiya 1/72nd Bf 109E-3

  • Member since
    November, 2009
  • From: SW Virginia
Posted by Gamera on Thursday, January 11, 2018 10:56 AM

I coat everything with polyurethane (spelling!?!) gloss varnish, even the parts that will be covered with groundwork and it seems to do the trick. 

"Fairy tales do not tell children the dragons exist. Children already know that dragons exist. Fairy tales tell children that dragons can be killed." -G.K. Chesterton

 

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