Daily Journal of Mr. Jacob Charles Malec, participant
Robert Barclay Trumpet Making Workshop--July 12-17,
1999
Second Day
Tuesday, July 13, 1999 -- 9:30 a.m.-5:30 p.m.
Today was long and tedious, but proved fruitful in
the end. I finished my yards and my bell. To complete the yards, first I
had to anneal the bras pipes to make then soft. Then I forced them onto
a mandrel were I removed any excess solder with a file. Then I burnished
them with a burnishing rod. Burnishing is rubbing the yard to make it
smooth. ( There are examples on the picture page.) After the
yards were as true and as round as we could possibly get by
hand, we pulled them through a bit witch made them perfectly true and round. This took until
2:00. Finally I decided to work on my bell. The bell is very difficult
to shape. In order to shape the bell you have to ram the bell onto a
bell shaped mandrel and get it stuck. Then you have to burnish it until
the brass becomes to hard to work . Then you heat it again, and repeat
the process until the bell is shaped. |
Daily Journal of Dr. Daniel Burdick, participant
Robert Barclay Trumpet Making Workshop--July 12-17, 1999
Day Two
Tuesday -- 9:00 a.m.-5:30 p.m.
Today was another very busy and tiring day. It started out very
auspiciously with a great soldering session on my third and final tube
seam. The solder just ran along the flux and it was a very clean and
efficient solder. Next, I water tested my other seams and found a few
holes that needed some re-soldering. So, I did these solders and they
were not that elegant. But they were serviceable. The rest of the day
seemed to go down hill.
I needed to hammer out my bell on the anvil. However, the anvil is
outside in the sun and I forgot my hat! So, since my dad has skin
cancer and my skin burns at the mention of the sun, I went back to Shawn
and Emily's to get my hat. While at the house, I used the hose to water
test the bell and found three holes that needed resoldering. So, I made
it back to the workshop and started hand hammering my bell. It was a
fun process once I figured it out. After each hammering, the bell needs
to be annealed to prevent stress fractures. Rick helped
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