Let me play my “tool-geekery” card today. I like tools, especially ones that are easily modified and do good quick work. One of my favorite tools in my foredom arsenal is the Snap-on Disc.
Let me give you my top 3 reasons I like them so much:
The first reason I like them is that they come in a large variety of sizes and grits, but I pretty much gravitate towards 4 different kinds.
- For quick grinding and fast metal removal, I use a Moore’s Adalox Course Snap-on Disc. I like the 7/8″ size for most of my discs because I like to trim my wheels as I go. I will show how a little later in this post.
- For medium grinding and blending, I like the Moore’s Adalox Medium Snap-on Disc. (also the Blue Zirconia Discs work about the same)
- For taking out smaller scratches and smoothing, I like to use an Aluminum Oxide Medium Disc. The medium grit on these are finer than the medium grit on the Alalox discs.
- Last, I like to use the Aluminum Oxide Fine Disc for smoothing and preparing for polishing.
The second reason I like the snap-on discs is that they are easy to trim. I have mentioned before that I like to reuse many or most of my tools and I have a huge pile of #12 Curved Surgical Blades that I have used to cut rubber molds. These blades are not sharp enough to cut molds anymore, but have many other uses.
To trim these discs once the edge gets dull, I mount these on a snap-on mandrel, back side out, and run the foredom at a pretty fast speed and trim off just a small amount of the disc. This enables a fresh cutting surface. Sometimes when the disc edge is a little out of round, I run the disc at a high rate of speed and rub it up against my bench pin. This wears the edge down and gives it a true running edge. I can now run this with confidence, very close to polished surfaces and stones. Once the “wobble” is out of the disc, I can do this easily.
The third reason I can’t live without these amazing tools is the fact that you can use them with the grit on either the inside or outside of the Snap-on Mandrel, depending on what type of piece you are working on. I have a number of these mounted in different grits and different sizes and positions. They are quick to change out and quick to change sizes.
Well, there ya have it, a little tool-time today.
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