gjhimages Posted February 28, 2015 Share Posted February 28, 2015 Built a 5mm base board using hobby craft foamboard, used 15 x 15 mm batens Painted today with poster paint Just a light covering to hide the bright white board Its badly bowed!!!! Time to give up and retire Link to post Share on other sites More sharing options...
peter220950 Posted February 28, 2015 Share Posted February 28, 2015 We've just had the same problem on some mock-up buildings on the club layout, It seems that like you, poster paint seems to have affected and bowed the walls, much to our surprise. I can only suggest trying to paint the other side of the boards to equalise the stresses involved, but if it doesn't go back it will need some more bracing. Unusually a row of terraced houses built from foam-board and covered on one side only with plastic embossed sheeting has remained perfectly straight, but it was more rigidly braced, with supports at about 2" apart at the floor levels. Link to post Share on other sites More sharing options...
gjhimages Posted March 1, 2015 Author Share Posted March 1, 2015 I will try to straighten it by painting tother side this morning If it fails BQ here I come Link to post Share on other sites More sharing options...
RMweb Premium Kris Posted March 1, 2015 RMweb Premium Share Posted March 1, 2015 I suspect that the board won't straighten when you paint the other side unfortunately. From my experience with this type of board I have always needed to paint both sides at the same time to stop bowing. Because of this I wouldn't use it for base board construction. Link to post Share on other sites More sharing options...
PGC Posted March 1, 2015 Share Posted March 1, 2015 I've no experience (yet!) of using foam board, but is this possibly due to poster paint being the problem? Phil Link to post Share on other sites More sharing options...
gjhimages Posted March 1, 2015 Author Share Posted March 1, 2015 Painted tother side, it straightened a little so Cut it down middle to make triangular plank Will now move on with scenery, hopefully a bit of weight in middle will counteract the small amount of warp remaining Forgot to mention its N gauge Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.