RH Undercut Tool

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Project by Jim Jakosh posted 08-28-2011 10:58 PM 1880 views 0 times favorited 10 comments Add to Favorites Watch

This is a tool I have had in the planning for a long time. I wanted a tool to undercut things like the head of a mushroom on a wine stopper or refrigerator magnet. I had made a LH undercut tool and use it a lot to cut round bottom grooves in the bottoms of bowls where I used to use a skew. It also has the angle on it so I can get real close to the center when grooving a bowl bottom.
This one is made from a 1/2” tool steel lathe tool bit which is ground to a .125 blade and rounded . It is welded to a piece of 5/8” square hot rolled steel which I cut it out to 1/2” to fit the tool in and welded it all around and then rounded the other end with a 4 1/2” angle grinder to fit the 5/8” hole in the handle. The handle is made from a sandwich of mahogany and maple with grooves burned in with a 1/16 aircraft cable. the brass ferrule around the top of the handle is probably the last piece I can get out of an old brass hammer I had. I made that hammer with a 1” head and 3/4” handle back in 1965 when I was a tool and die apprentice. I found it in mom’s house when we were cleaning it out and thought it could be of further use someday. That day has come and gone. The last shot is what is left of the 1” head with a threaded hole in the center…..........Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

10 comments so far

View peteg's profile


3474 posts in 1914 days

#1 posted 08-29-2011 02:08 AM

Great idea Jim, might have to knock one up for myself, I have plenty of spare turning chisels to rehash :))

-- Pete G: If you always do what you always did you'll always get what you always got

View Grumpy's profile


20734 posts in 2942 days

#2 posted 08-29-2011 02:37 AM

Interesting tool Jim. Maybe you could show us some of the projects you used the tool on. Just a thought.

-- Grumpy - "Always look on the bright side of life"- Monty Python

View ShopTinker's profile


884 posts in 1859 days

#3 posted 08-29-2011 03:35 AM

Having the metal working skills to be able to make your own woodworking tools is pretty cool! Nice job on a very cool tool. You might be able to make something from what’s left of that hammer head, a washer or two maybe? :)

-- Dan - Valparaiso, Indiana, "A smart man changes his mind, a fool never does."

View Jim Jakosh's profile

Jim Jakosh

14421 posts in 2196 days

#4 posted 08-29-2011 04:56 AM

I have a project in mind for this tool. I should get it out this summer yet…........Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View Bob Collins's profile

Bob Collins

1874 posts in 2775 days

#5 posted 08-29-2011 07:35 AM

Handy looking tool JIm, also have a few spare turning chisels that could be reshaped.

-- Bob C, Australia. I love sharing as long as it is not my tools

View Michael1's profile


403 posts in 1751 days

#6 posted 08-29-2011 10:16 AM

That is awesome!! My Dad was a tool and Die maker by trade and I wish I had learned more about metal working as I cant tell the difference between different metals. My brother is a machinist and he tells me the same thing when it comes to wood. So we team together and help each other with projects. I am going to enlist his assistance in making one of these. thanks for the post and inspiration.

-- Michael Mills, North Carolina,

View Roger's profile


17851 posts in 1895 days

#7 posted 08-29-2011 01:50 PM

gr8 way to recycle Jim

-- Roger from KY. Work/Play/Travel Safe.

View jjw5858's profile


1132 posts in 1693 days

#8 posted 08-31-2011 02:35 AM

Very cool idea here, great job!

-- "Always continue to learn, laugh and share!" JJW

View mafe's profile


10541 posts in 2180 days

#9 posted 09-01-2011 01:02 AM

Nice Jim, nothing like homemade tools.
And what a elegant handle.
Best thoughts,

-- MAD F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View exelectrician's profile


2304 posts in 1518 days

#10 posted 11-05-2011 03:59 AM

Jim you are a man after mine own heart. I was brought up with the mantra “waste not want not”. How many kids are taught that now?

-- Love thy neighbour as thyself

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