Saw blade lathe hack.
A rusty 100 tooth saw blade I found in the junk pile.
I dont throw much away I can make use of and this is an example.
I said this on another thread but here is is again.
If you have a lead screw with 10 treads per inch and you rotate it one time it is going to move 0.100 or 1/10th of an inch.
If you divide 100 by 1 you get one or in other words the screw will move 0.001 or one thousands of an inch.
So here is what I did, I made an arbor for the saw blade to fit on and put it in the spider on the back of the lathe with a stop pawl so it will stop on every tooth.
I then set the cutting tool up on the lathe to cut at a 90 and set the depth and locked the carriage down.
I then ran the top slide to the stops and did this 100 times rotating the blade one notch one tooth at a time.
Then I set it up to cut a longer line and cut ten lines like this.
Next I counted five from the last long line and cut one and then just counted to ten after that until I made a complete rotation.
Now I have sort lines representing 0.001 ten lines representing 0.010 and ten lines representing 0.005.
I have two of these to make for some big dials I am making.
Worth
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