Since most of my uploads are about cycling, my quick bio: built up my first bike from a frame when I was 15, worked at a few LBS's in my early 20's in the SF Bay Area (Orinda Spoke and Pedal, Diablo Bike in Walnut Creek, First Tri in Berkeley), then was a sales rep for 3 years (KHS, Veltec-Boyer, Puma). Several bike camping trips down the Pacific Coast, then a long hiatus while I went back to school to complete my Mechanical Engineering degree (SF State, 1991). Been in semiconductors for a few decades (Applied Materials, Intel, now Lam Research). Started bike commuting to get back into riding shape, caught the vintage collecting bug and 650b-itis. My first big purchase was a Peter Weigle-ized '73 Raleigh Competition. Moved to Portland in 2014, took the UBI framebuilding course, but I mostly do 650b conversions, custom racks and decaleurs, and frame repairs. Most every dime I make doing that gets ploughed back into tools.


My goal is to transition from engineering to semi-full time frame and bike work by the time I retire from semiconductors.


My wife and I have twin daughters that were born in 2002. Watching them grow up to be strong, independent young adults has been a joy. That and I get more time to spend one on one with my wife nowadays!

Read more

Some of my work

View all

Photos of Mark Guglielmana


Have something nice to say about Mark Guglielmana? Write a testimonial