If the CrMo is heat treated (and as hard as it should be) then all you
will get is a dull blade in a portable bandsaw. A carbide tipped blade
may work, but are fragile, a tungsten carbide abrasive coated blade will
definitely work, but $$. Several cutoff blades 4 1/2" grinder will also
get it done, but why and how safely, and where is the cut off piece
going to go?
Grant KZ1W
On 7/26/2014 10:56 AM, Charles Gallo wrote:
Cordless portable bandsaw
--
73 de KG2V
Charlie
On Jul 26, 2014, at 1:47 PM, "Victor Walz" <n2pp@frontiernet.net> wrote:
I have a 22 ft (2" OD) heavy duty Cr-Mo mast presently installed up on a 100
ft Rohn 45 tower. It weighs 200+ pounds. I previously had a 4 el 20 meter
yagi stacked 12 ft. above a 40 meter F12 yagi. I just finished removing
both antennas for repairs and have decided not to reinstall the stack due to
the complexity of the installation. I will be re-installing the 40 meter
yagi and some VHF antennas on this tower. Consequently, I would like to
shorten the 22 ft mast by 10 ft.
I am looking for advice on the most efficient way to cut this very thick
high strength mast in place. I would prefer to use battery-operated tools
such as a reciprocating saw(metal blade?) or a grinding tool (cutting
wheel?). I can run 120 VAC (about 200 ft extension cord) up the tower if
needed.
What would be the optimum method for cutting this mast without excessive
tower time? Thanks in advance for any responses.
Vic, N2PP
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