Bandsawing Extrusion
 

I have a hunk of 8020 type extrusion (its actually Bosch, but same
concept). What bandsaw blade would you recommend for cutting this.

I currently only have Starrett Bi-Metal Vari 10-14 TPI. Would this be
sufficient or should I go with a finer tooth like a 14-18.

I only need to make 1 cut, but would prefer the bandsaw to hand as I'm
not very good with a hacksaw (you should see the junk job I did on the
wire closet rack I just cut by hand).

I would also of course prefer to not wreck my blade ;) Best to buy a
new one if needed and have 2 than buy a new one to replace the ruined
one.

Bandsawing Extrusion
 

On Fri, 14 Sep 2007 00:15:18 -0000, "
wrote:

I have a hunk of 8020 type extrusion (its actually Bosch, but same
concept). What bandsaw blade would you recommend for cutting this.

I currently only have Starrett Bi-Metal Vari 10-14 TPI. Would this be
sufficient or should I go with a finer tooth like a 14-18.

I only need to make 1 cut, but would prefer the bandsaw to hand as I'm
not very good with a hacksaw (you should see the junk job I did on the
wire closet rack I just cut by hand).

I would also of course prefer to not wreck my blade ;) Best to buy a
new one if needed and have 2 than buy a new one to replace the ruined
one.

You need to turn the stock so it has the tallest cross-section
exposed to the blade, then measure. You want two teeth in the work at
all times, so it won't hog and rip the teeth off the blade.

Most small extrusions are really thin, and something in the 18TPI to
24TPI range would be more like it.

Get the right blade. For one cut you might be able to cheat
disaster by feeding really slowly and do it with a 14-18 blade - or
you could chew all the teeth off a perfectly good band and ruin the
stock.

-- Bruce --

Bandsawing Extrusion
 

" wrote in
ps.com:



I would also of course prefer to not wreck my blade ;) Best to buy a
new one if needed and have 2 than buy a new one to replace the ruined
one.


The 10-14 should be fine, you want a coarser blade because aluminum needs
a lot of gullet for chip evacuation. I cut tons of this type of
extrusion, normally on a miter saw. The hacksaw blades I use for it when
I do have to cut a piece by hand is a 14 tpi.

--
Anthony

You can't 'idiot proof' anything....every time you try, they just make
better idiots.

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