First let me say hi, my name I go by is Tim, and I am new to LJ forums, though been lurking here for years.
Primarily I am a violin maker, guitars too, but lately working on a few projects for the fun.
Over the years I have used printouts for templates, and never really addressed an issue I kept noticing, of the finished project’s would be a tad bit larger than the design. I began to look at the problem when I decided to cut some gears for a clock project, and alas, it hit me, that the issue was in the paper absorbing moisture from the adhesive, and during the application to the wood, the paper would stretch a bit, especially if using a PVA glue. I tried using clear coat spray and adhesive spray from a can, still having some error in the final work. I figured the paper would stretch some but as things dried, the shrinkage would be the offset, and all would be good.
I realize I am asking the materials to do better than the materials can hold under normal weather and conditions, but it seems I am getting an error that is inconsistent of that, having as much as 2 mm growth over 250 mm, and that is after cure time.
Maybe I am demanding too much from the materials, but thought I could at least ask others if they have dealt with this, and how did they overcome the error?
The thoughts I have in determining a good resolution are the choice of the adhesive, the choice the paper material (Mylar, Parchment, other alternatives), climate control or big bucks to get a printer that prints direct to the wood.
The climate of the work area is 73 degrees,@40% both +- 5 typically.
I would appreciate any thoughts the community may have.