Looking For Straight Edge Grinder

[tomwalz]

Looking For Straight Edge Grinder

Saw it in a class and couldn’t get the name. It might have been the Armstrong Machine.

http://armstrongblue.com/publications/tension_gauge_Operating_instructions.htm

Looking for an alternate machine. Don’t really trust Armstrong after all the changes in the last few years. Don’t want to pay $2500 and get stuck with an orphan.

Process.
It starts with a bench grinder. In front of the bench grinder and perpendicular to the wheel is a table that can be slid manually from left to right and back. On that table is a second setup that allows you to advance the straight edge into the wheel.

So you place the straight edge on top of the top table.
You move it left to right until you find a high spot.
You move the straight edge off the high spot and lock it in place.
You turn the bench grinder on.
You make pass across the wheel and back.
You can tell where you are by grinding noise or by sparks.
You make many passes of small increments.
After every set of passes you feel the ground area. If it is warm at all then you stop and let it cool.

Thanks,

Tom Walz
Carbide Processors.


Thomas J. Walz
Carbide Processors, Inc.

http://www.carbideprocessors.com

Good engineering starts with a Grainger Catalog.

 

[Compositepro]

You can probably get a used surface grinder for less than a new tool as you describe and it will have 10 times the accuracy and water cooling capability.