Sunday, May 26, 2013

Making Saw Blade Shaft Adaptors

One thing everyone has had to come to grips with are saw blade adaptors, now that the majority of the diamond tooling we buy is made in China.  There have been problems with consistency and other things, things like arbitrary shaft hole sizes in the same lot, et al.   Sometimes, even most of the time, a Chinese item will work ok, as long as you fix it first.  Remember that natural law, rocky-san.

When you put your new sawblade up to the shaft of your saw, and the hole in the blade is too big for the shaft, you are in need of a shaft adaptor.  There are some commercial adaptors available and if you can find those that work (Good Luck!) stick with them.  Otherwise, fashion your own from thin cut cross sections of pvc pipe, sanded and/or filed and/or cut down; or punched out of leather or plastic with round punches of varying sizes.  That last I have been recently successful with.  Tape your adaptor into the blades hole from one or both sides of the blade.  Lighters can come in handy during these operations as well.

You want the blade to rotate without wobble, so it has to be centered on the shaft pretty closely.  It can be done, perhaps not easily, but correctly.  When doing these make 4-6, use the best one.

Thursday, May 23, 2013

Cost Savings

I happened to pick up a catalog from the most well known manufacturer of lapidary equipment here in the states, and it was driven home to me once again the value of this book I sell, and I am glad to do it.  When I first began cutting rocks, it was long before the net, and there were no alternatives to buying the equipment as it was manufactured, usually used, though I have bought a new machine or two in my life, and they were not worth the money.  Some of the old timers built their own machines, and I owned a few of them over time too.  Mostly though, I began experimenting early with my own devices.  It was because of things like I saw in this catalog I picked up:  6" trim saw with arbor $270.00+ (see the photo-plans in this blog where you make one of those for about ten dollars),  10 pound capacity vibrating tumblers start around $500.00, Bench Lathe Electric Arbor Systems $700.00 and up,and even a flat lap near 2 grand!  Some people might think the 50 bux for the plan sets/lesson plans/how-to book is steep, it is not.  It will get you working stone quickly and cheaply, and perhaps even inspire you.  That is the wished for result.