Scrapping finish

yes it is. Have to be careful and not take too deep a cut.

Dave

DMS we share the same initials

Hehe, DMS are not actually my initials. It is the initials of a character in a book (Cryptonomicon). I picked it up as a moniker at some point and it stuck.

My middle name _is_ David though ;)
 
When using a cut off wheel you have an air regulator to control RPM. I also use a square corner on a hand scraper blade, a knife file, a knife stone, I sometimes use a 3 corner saw like the one in the Connelly book, hack saw, I have milled it out with a saw blade on a mill, There is no exact method. I made a jig like Dave's when I was teaching classes at factories in Taiwan where they made the same machine day in and day out. Most of the time were building machines that used linear guide rails mounted on cast iron bases. Many think you can just bolt on Linear ways, but he surface under them has to be scraped too. Not o the same finish or high number of points per inch (PPI) but we try to get a higher percentage of contact or points (POP)and accurate.
 
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