mortising chisel help

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Blog entry by CAT posted 11-13-2010 04:27 PM 976 reads 0 times favorited 2 comments Add to Favorites Watch

I have inherited some of my father-in-laws tools and have a Delta Mortising attachment. I do not have the correct size chisels to match to the Delta set. Need help finding the correct size equipmen (chisels) How do I size the attachment set and where are good places to look for the correct mortising bit and chisel?

2 comments so far

View David Kirtley's profile

David Kirtley

1286 posts in 2418 days

#1 posted 11-13-2010 06:18 PM

I could be wrong but all of them I have ever seen were the same size for the holder for the chisel. 3/4 shank and then the size of the mortise cutter. They are pretty cheap at Harbor Freight and Grizzly. I don’t know about the Delta specifically.

-- Woodworking shouldn't cost a fortune:

View Bluepine38's profile


3336 posts in 2505 days

#2 posted 11-13-2010 06:26 PM

You did not mention the age of the mortising attachment. If it is fairly new, you can get all the information
you need at the Delta-Porter Cable web site, if it is older, try Old Woodworking Machines.
Most sets are fairly standard, but you will need a drill press to connect the attachment to.

-- As ever, Gus-the 77 yr young apprentice carpenter

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