Dry Sanding With Super Assilex and Super Buflex Abrasive Sheets

I put this East Indian rosewood/European spruce guitar to one side as I proceeded with my usual process of wet sanding and buffing four other guitar bodies, the motivation being that I wanted to compare wet sanding with the dry sanding alternative.

There was an unavoidable delay as I waited for delivery of the Eagle Abrasives' Super Assilex and Super Buflex papers from Stewart MacDonald in the U.S., but as this particular guitar has been in the works for a number of years I figured that in the overall scheme of things another few weeks' wait was immaterial. This product is usually sold in packs of 25 sheets and is costly in such quantities, so the fact that StewMac sells individual sheets was very appealing given that I'd need a range of grits. Note that the grading system used by the manufacturer identifies the papers' grit with an K prefix, which apparently corresponds to the more familiar P designation.

As the last sprayed coats of lacquer had laid down fairly smoothly, I chose to begin sanding with 800-grit paper. Apart from the lack of the usual wet mess, and the ability to dispense with the assortment of towels and rags I usually employ to clear the sanding sludge, I was immediately impressed by the fact that this paper quickly levelled the lacquer and clogged to a much lesser extent than the cheaper sandpapers I'd used in the past. When it eventually did show signs of loading with finish, it was easy to prolong its life by quickly wiping it across a scrap of towelling. In so doing, it struck me that the cheaper papers offer a false economy: they tend to clog quickly even when used wet, and I'd bin a significant quantity of it in the course of sanding a single guitar. In contrast, the Super Assilex and Super Buflex papers were very resilient and relatively long-lived.

I proceeded through 800, 1000, 1500, 2000, 2500 and 3000 grits, alternating the sanding direction between grits as I have in the past in order to more readily identify scratches remaining from the previous grit. With no need to constantly squeegee or wipe away wet slurry, it was pleasing to be able to monitor sanding progress with such ease. With a dry work environment an additional bonus, as I sanded the headstock later I appreciated the absence of water that can seep into tuner holes and potentially cause finish problems.

Having finalised sanding with the finest grit, Menzerna fine compound on my buffing wheels brought the lacquer to a mirror-like shine with much less effort than is usually the case. I buffed the headstock by hand to minimise the likelihood that I'd burn through the edges. Using Meguiars' Ultimate Compound I was able to bring the finish on the headstock to an impressive gloss with very little effort.

Other than the initial expense, I can't see any downside to this paper, and I'm unlikely to ever take the messy wet sanding route again.

Check it out on the StewMac web site: Super Assilex and Super Buflex 

Cheers, Pete