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Submitted By:   biglar@gogittum.com
Email List:   Kolb-List,Ultralight-List
Name:   

Larry Bourne

Date:   

Jan 8 2003

Subject:   Taps
Description:   

Food for thought, if you're ever tapping holes where the threads need to have maximum strength. The picture, "1st Tap" is the large diameter Chinese junk tap that I felt 'tighten up', and start cutting in existing good threads. I stopped immediately - in less than 1 turn - and checked things out. You can see the micrometer markings clearly. 2nd pic, "Correct Tap," is the tap I borrowed from work, and the difference in diameters is - to me - dramatic. They are both marked "3/8 x 24." I'm very glad I stopped to check, on this critical component. Tomorrow, I'll try to get some pics of the thing in place, and you'll see what I mean. -Lar.

 
    Correct_.375x24_Tap.jpg Photo 1
    jpg_1st_.375x24_Tap.jpg Photo 2





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