gernoff
Hot Rolled
- Joined
- Mar 19, 2011
- Location
- Great Falls, Montana
I have a 18" cast iron level body I am going to use as a parallel straightedge in a measurement tool. It will be suspended vertically so sag will not be a problem. Measurements will be with either a test indicator or dial so no large lateral forces. Hopefully that covers most of the naysayers inputs. I have surface ground the two faces to within about 3 tenths and was going to scrape it to as close as I can get then lap for final accuracy. I am now tempted to use adhesive to attach shim stock (waterjet cut .03" spring steel?) to the parallel faces then lap them to final accuracy instead.
Easy to regularly check it for parallel on surface plate with my Mahr gage head..... Easier to re-lap the bare cast iron than the shim stock if it needs rework.....
I would appreciate everyone's input/pro's/cons. Suggested adhesive? Differential expansion issues? Etc. Etc.
Thanks.
Easy to regularly check it for parallel on surface plate with my Mahr gage head..... Easier to re-lap the bare cast iron than the shim stock if it needs rework.....
I would appreciate everyone's input/pro's/cons. Suggested adhesive? Differential expansion issues? Etc. Etc.
Thanks.