- posted 12 years ago
Today I needed to make an extended nut with a tee handle to screw a compresson
a product we make to pressurize it and do a leak test.
Our old line has a compression fitting nut that looks like it was brazed to a
360 brass. Not sure if filler metal was used. Then a couple of pins at the far
implement a tee handle.
I didn't like it. I obtained some fittings and decided to use a chunk of 1/4"
pipe with a
taper cut to match the taper on the brass fitting. I also looked up the
for some silver brazing wire we have and the 360 brass the fitting is made out
Silver brazed using Harris black flux and some 40% silver brazing wire. That
Any tips on getting the flux off other than wire brushing?
Then I needed to add the tee handle. I thought about drilling holes 90 apart
two pins. Then I decided to just stick a long rod though the cross drilled
chucking up the pipe and using a two flute end mill to cut out the center area
1/4" tubing has to pass.
I *thought* the 1/4" round stock for the tee handle was low carbon steel. Guess
After I brazed the tee handle in, I tried a 2 flute HSS end mill in a drill
chuck on a 22"
swing lathe drilling into the end of this thing clamped in the chuck. Wiped out
mill instantly. I guess that tee handle stock was not low carbon steel. Oops.
Found a 8.5 mm carbide drill in my tool box and used that to drill through.
easy. Mystery metal can bite you some times. The strange thing is I brazed in
handles and went to lunch. I'd have thought air cooling would have left the tee