If you've built your own carbide tool...

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bking0217

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Oct 4, 2010
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Location
Apopka, FL
what size screw and tap did you use? I'm looking to make my own turning tool, probably tomorrow, and I need to know what I need to pick up while I'm at the store.
 
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The screw size and head shape can vary depending on the insert used -- get the screw with the insert to assure they are a near perfect fit -- bad fit can be broken carbide.

Where are you going to get your carbide insert???
 
If you have a Woodcraft close by, they sell the replacement cutters for Easy Wood Tools, and the cutters come with the appropriate screw. The screw will have a taper to match that of the taper in the cutter. I think the thread in the screw for mine was 10-32.


http://www.woodcraft.com/Product/2080216/29204/Ci3-Mini-Finisher-Replacement-Carbide-Cutter.aspx

Link to thread of my first homebuilt carbide tool....

http://www.penturners.org/forum/showthread.php?t=73365

I'm currently building another that i can swap tool ends with different cutters, i should have it finished soon.
 
Then why not buy a tap to match the screw that comes with it? You can take the screw down to a hardware store to match the threads and buy the correct drill bit and tap.
 
I have no problem with buying the approriate tap and drill bit. I just need to know which ones to get. I could pick up a tap and die set while I'm at Harbor Freight tomorrow but I'm still at a loss as to which drill bit I need.
 
Wow, Kevin. Your's looks like it took way more effort than I plan on doing. I was just going to take a Harbor Freight pry bar and cut off the end (there's my handle and shank). Then I was going to go through the motions like you did. Yours looks awesome.
 
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You will need to know the size of the screw and thread pitch that comes with the cutter. Once you know that you can find the aproppiate tap and they usually have the drill size needed listed either on the card or on the tap. If not heres a link you can print the list and take with you for reference.
http://www.victornet.com/reference/Tap_Drill.html

Hope that helps
Mike
 
I just checked mine, its R4 from woodcraft, and it 8-32, not 10-32.

8-32 uses a number 29 drill bit. If you cant find a number 29, you might try a 9/64ths drill bill, it is slightly larger, so i'd try a test hole on a piece of scrap to make sure it wont be too loose.
 
I helped a friend make one, and the largest that would fit was 6-32. It all depends on the insert you are using though.
 
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