Monthly Archives: November 2012

Tap for Aluminum

Posted on November 12, 2012 by dave49

The frame screws of my reels are 4-40 UNC. There are 10 such holes (foot & pillars) to tap for each reel. On repetitive tasks, it is good to have the best possible tool. McMaster-Carr sells “Vanadium Steel Hand Taps … Continue reading →

Posted in Threading | Leave a comment

Engraving with the Mill

Posted on November 10, 2012 by dave49

In the previous post I showed the artwork for a logo in the form of a circular monogram. This is meant for use in electrochemical etching. After making this artwork, it occurred to me that it might be simplified to … Continue reading →

Posted in Engraving/Marking | 2 Comments

Logo

Posted on November 6, 2012 by dave49

This is another post on the problem of marking my reels. In the spirit of “divide and conquer”, I have decided to put just the initials “NB” on the external screw head, and the sequence number somewhere inside the reel, … Continue reading →

Posted in Engraving/Marking | 2 Comments