Warped Scales

to answer your earlier question, warpage and separation from the tang in my experience has happened when the wood was too wet, or too dry. when the dry wood reaches its normal humidity level of where ever it resides, it will expand. the wood that was 'wetter' than the normal humidity level will shrink. that is what makes me question the quality of the stabilizing job. if your scales are between 5-9% moisture, that is normal domestic humidity for wood in most places. if you live near the amazon rainfores, it would probably be higher. i learned this from master cabinet makers who do not like their joints to change dimensions. i bought a moisture meter, and it has not happened since. its a mystery how it happened. if they were well stabilized, there should not be any moisture to measure, and i would blame the heat.
 
Johns comments seem appropriate to consider, but I wonder about those scales that are "out in the shop" and not curved. This is really far out as a possibility - but could you be seeing a warping caused by the differences in **thermal* expansion (not having to do with moisture) between the G10 and the stabilized wood? I think it not likely - but a possibility. what is the temperature difference between shop and house? A test: take a scale similar to what you ran into problems with, glue it to and equivalent piece of G10, then let it completely cure (3-4 days) in the shop. Then bring it inside the house, and see if it warps (if it was flat in the first place)
 
Oh yes, John's comments and input is greatly appreciated. As is everyone's.
The scales "out in the shop" are boxed.
I do have some "cheapy" scales that when purchased were and are not flat and I knew this from time of purchase. Some though, are very dense and heavy and very flat as checked on a flat surface.
So, I really feel like the possible moisture issue is moot in this particular case. Water moisture at least.
Thermal expansion might be an influence, but would it remain after cure?
There is a difference of temperature between shop and house. No changing that for the foreseeable future.
The test you suggest, well, I'm not sure that I have or know if I have a "similar" set of scales or not, quite honestly. As far as I know the resins used may be different from each other as I have purchased them from various venders, Bladeshow, online, etc. And they are different woods, burls and cuts.
Thanks for your input though.
 
SS369 said:
Oh yes, John's comments and input is greatly appreciated. As is everyone's.
The scales "out in the shop" are boxed.
I do have some "cheapy" scales that when purchased were and are not flat and I knew this from time of purchase. Some though, are very dense and heavy and very flat as checked on a flat surface.
So, I really feel like the possible moisture issue is moot in this particular case. Water moisture at least.
Thermal expansion might be an influence, but would it remain after cure?
There is a difference of temperature between shop and house. No changing that for the foreseeable future.
The test you suggest, well, I'm not sure that I have or know if I have a "similar" set of scales or not, quite honestly. As far as I know the resins used may be different from each other as I have purchased them from various venders, Bladeshow, online, etc. And they are different woods, burls and cuts.
Thanks for your input though.
Click to expand...
What is the thickness of scale ? If they are enough thick you can flattened them from wood side and repeat proces ? Glue liners on that side and see what would happen ?
 
Yes, they are thick enough Natlek. 5/16 inch
I'm wondering, if I remove, hollow the liners some, if it will allow the scales to relax.
 
Yes ,i would try that and see what would happen , then glue another liners and cross finger :)
 
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