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Custom Lug

 

Lug cutting can be a very rewarding aspect of framebuilding.  Last year, I ordered up a set of lugs from a company, but alas, it only included head lugs, and no seatlug was included.  The only solution at the time was to cut a seat lug to match the head lugs.  I ordered up some Haden blank lugs from Ceeway, made some measurements of the original lugs, and then mapped out the design on the blank lug.  I found the easiest way to do it was to pain the blank lug with black magic marker, and then to scribe the design into it with a scriber.  Then I slip the lug blank over a scrap piece of tubing and start to cut and file to the correct line.  To make the lug a little nicer, i brazed a point onto the top of the lug.  The point is nothing more then a triangular piece of scrap tubing that was brass-brazed into place and filed to match.   The blank lug was stamped, and so the seat binder area was that cheesy stamped design, so i cut it off.  However, that leaves a square hole in the back of the lug.  So, I cut a piece  of tubing to match the hole left in the back of the lug.  Once I braze the lug into a frame, i will braze this square "patch" into place behind the lug and file it smooth.   Then, I'll braze on a cast binder bolt apparatus, and it will look much nicer. 

 

 

 

 

 

 

 

Finished product, side view.  When the lug is built into a bike, i will braze on a seat binder bolt.  See the techniques page for details. 

 

 

 

 

 

Thanks to David Bohm, Josh Putnam, Damon Rinard, Fred Parr, and others whose ideas and information have gone into this page.


If you would like to get in touch with me, please e-mail me at: root@student.uchc.edu

Created September 20, 1998. Last updated March 13, 2003.




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