|Forum topic by lumberjoe||posted 02-18-2014 04:42 AM||9130 views||7 times favorited||38 replies|
02-18-2014 04:42 AM
So I decided to “bust some myths” about finishing. Most notably that pure tung oil and boiled linseed oil based finishes pop grain better than anything else. Here is what I used (note Lacquer omitted – can’t spray inside and too cold outside). All the walnut has been sanded to 220 grit
Zinsser Shellac (3lb cut right out of the can, waxed, brushed)
I generally do this with scraps from pieces I am using for a project. You can see how wildly one species can vary in color
This has been pore filled already – 1lb cut of dewaxed shellac, let it dry, then rub with a french polishing pad – but only alcohol on the pad. The pad is tapped on some pumice periodically to work the dried shellac and walnut into the grain. I didn’t do a terrific job here (It will show later)
The rest of them. Taped off so I can see the natural wood after for a real comparison.
First coats applied
1st padding session. French polish brings out every single little defect (lazy pore filling and planer snipe that wasn’t visible before). This looks like crap compared to the final session and after rubbing out with rottenstone; but getting glossy.
Pure tung on the top, my custom finish based on Sam Maloof’s finish on the bottom – Poly, tung oil, boiled linseed oil, and solvent. My skepticism of boiled linseed oil popping grain better than pure tung oil is fading a bit.
Waterborne “poly” (gloss) vs minwax semi-gloss. Not too much difference yet. I thinned the oil based poly to wipe it so there is barely any there. That side will be much darker
Watco “teak oil” vs Canned Shellac.
Not too much difference here actually. The shellac will be much glossier. I’m not sure what is in “Teak” oil but I actually like it. I use it on razor stands because it is an outdoor finish. My guess is Tung oil and a spar varnish. It doesn’t build a film, but is really glossy for an oil/varnish.
Natural Danish oil vs waterborne Matte Poly. Both “natural” finishes. The matte waterborne acrylic side looks like there is nothing there. By the way, this Varathane soft touch matte poly is AWESOME.
And here is the kick in the nuts I wasn’t expecting. Dewaxed shellac (brushed) vs Arm-r-seal. I always thought shellac (even as a washcoat which is what this basically is) did a terrific job at popping grain. Not even close.
I am going to follow the proper finishing schedule on all of these finishes and rub them out as well. Interested to see the final results