Floor Mortiser Mods and Improvements #1: Tool-Free Chisel Knob and New Clamping Face

  • Advertise with us
Blog entry by pintodeluxe posted 01-16-2015 07:10 PM 2414 reads 1 time favorited 2 comments Add to Favorites Watch
no previous part Part 1 of Floor Mortiser Mods and Improvements series no next part

My Jet mortiser came with a brass screw to retain the hollow chisel. It worked fine, but was a little cumbersome to hold a screwdriver while setting the bit square to the fence.


So I traded the screw for a handled knob. The new knob comes with the Powermatic 701 mortiser, and is compatible with the Jet JFM-5 and Powermatic 719. The knob has a threaded post with a brass tip to prevent marring the chisel. This setup makes it much easier to change and adjust the chisels.

I also added a wood block to the face clamp. The wood block has self-adhesive sandpaper for added grip. The block is screwed in place through existing holes in the clamp face. Now you don’t have to tighten the clamp very much to hold the workpiece in place.


-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

2 comments so far

View stevo_wis's profile


125 posts in 2449 days

#1 posted 01-16-2015 07:38 PM

That trick with the block and sandpaper may be all I need. It is so simple. I always seem to overcomplicate things.
I will give it a try. I also like the knob idea instead of a screwdriver.

-- Stevo

View Roger's profile


19714 posts in 2226 days

#2 posted 01-18-2015 12:24 PM

Sandpaper will definitely hold anything in place.

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed.

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics