Need Advice How can I glue these without squeeze-out?

ChemE75

Tom
Senior User
I think I recall that the formula is brought to a high temperature as well before it is bottled. It dries to touch in an hour here.
I found my sds. It has linseed and a proprietary “modified” oil, my guess is it’s a “boiled” tung. The heat treatment is probably correct since linseed won’t dry very fast if not pre-heat treated and heat treated tung will dry much faster. I’m pretty sure when you see anything that’s a “modified” oil then it’s brought up to high temp in the absence of oxygen to catalyze the molecules to start linking, forming polymers that are not fully cured, basically creating a thickened oil that will oxidize and dry faster and leave behind more of film forming layer. Tru-oil and many others use Stoddard solvent, basically a distillate like mineral spirits, white spirits or paint thinner - just more refined so has less other distillates and nearly none of the lighter volatiles. Today’s low odor paint thinner is basically like stoddard solvent since it has less of the lighter volatiles that evaporate more easily creating more odors. Wood finishing products is an interesting part of chemical engineering (my background was more in other types of specialty chemicals). If you see alkyd in an oil based product, then it has synthetic resins similar to polyesters to mimic the natural oils. I’ve seen some guitars finished in tru-oil with many layers that look like a nicely spray lacquered buildup.
 

Bruce Mack

Bruce
Senior User
I have been following a guitar maker, Ken Parker, on YouTube. Ken is soft-spoken and thoughtful, never adamant in his opinions. He has been a machinist and has adapted hand tools, small planes and scrapers, to his needs. Ken's videos are solid. He doesn't promote a system and he has no advertisements. One of his recent videos shows him fitting and gluing the fretboard and headstock veneer to the neck of his guitar. I hope this clip from the end of this video showing the clamped product whets your interest and makes you smile.
 

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