cheap electric compound mitre saw vs. dedicated metal cutoff saw

cheap electric compound mitre saw vs. dedicated metal cutoff saw

Post by Pogo » Sat, 03 Dec 2005 13:49:16


I have been considering buying a cheap electric compound mitre saw, and next
to it saw a metal cutoff saw. Looks like I could get the same results by
putting a cutoff blade on the mitre saw (for my purposes of infrequently
cutting aluminum extrusions, etc.) This is what I already do, except I put
the composite cutoff blade on my circular saw.

Any comments on that idea ?

Thanks !
 
 
 

cheap electric compound mitre saw vs. dedicated metal cutoff saw

Post by Mike Youn » Sat, 03 Dec 2005 16:16:40


Rotation speed is different, and woodworking tools lack coolant. In general,
light gauge non-ferrous sections and small bars should be OK. You need to
feed fast enough to minimize chatter and burning. The available power will
limit what you can cut. Steel and iron would be a bad idea even with
abrasive blades. The abrasive dust gets in the bearings and kills them
rather quickly.

 
 
 

cheap electric compound mitre saw vs. dedicated metal cutoff saw

Post by andrew Gam » Sat, 03 Dec 2005 17:49:53


I have a cheap Ryobi saw with an expansive aluminiun cutting blade in
it. I only cut Al and the results are good, once I got the setup square.
If I was to buy another one I would make shure there was no tilt in
the direction when you are facing the saw. It just makes it a hard to
get it square.

My setup although cheap it is more expensive than a really cheap chinese
metal cutoff saw. But I think the large blade width on cutoff saws
would make it hard to work on more delicate/small parts.
 
 
 

cheap electric compound mitre saw vs. dedicated metal cutoff saw

Post by Matt Timme » Sun, 04 Dec 2005 12:08:33


Most of the metal cuts you might make with a mitre saw are much more
practical with a horizontal/vertical metal cutting bandsaw. I use a cheap
($200 when I bought it) model to cut strips off aluminum plate up to 1"
thick, and to cut aluminum bars up to 4" thick. You can cut iron, too -- it
just takes longer. The advantages of the bandsaw are:

- The blade is cheaper than those abrasive things, and doesn't wear out
nearly as fast;

- Because the blade is thin, it removes much less material. It takes a lot
less power, makes a lot less dust, and generates a lot less heat.

- You can use the horizontal configuration for cutting thick bars. It takes
some time to cut a bar 4" thick. You just set it and walk away. It'll turn
off when the cut is done.

- It's relatively quiet. Cutting metal with a circular saw is REALLY LOUD,
but I can use the bandsaw in the ba *** t when my 2-year old is napping, and
it won't wake him up.

This is mine:
http://www.yqcomputer.com/

In the US, you can get something similar at Harbour Freight.
 
 
 

cheap electric compound mitre saw vs. dedicated metal cutoff saw

Post by Pogo » Sun, 04 Dec 2005 12:40:46

> Most of the metal cuts you might make with a mitre saw are much more

Yeah I noticed that the abrasive blade on my circular saw is a LOT louder
than same saw cutting wood (normal blade)

I would assume a band saw might be more accurate, too ? So far I haven't
needed extreme accuracy, but I have noticed that I still need to file things
down to get them square like I want even using a t-square to guide the
circular saw.

For my current bot I should need to cut only one or maybe 2 more extrusions
to size, but if I need to keep doing so I will surely need to get something
better than what I have !
 
 
 

cheap electric compound mitre saw vs. dedicated metal cutoff saw

Post by Matt Timme » Sun, 04 Dec 2005 13:31:58


More accurate than a circular saw, but not as accurate as a mitre saw. The
blade is flexible, so it's easy to push around. When you want something
really accurate, you'll have to cut it a wee bit oversize and grind it down.

--
Matt
 
 
 

cheap electric compound mitre saw vs. dedicated metal cutoff saw

Post by Pogo » Sun, 04 Dec 2005 15:43:46

> More accurate than a circular saw, but not as accurate as a mitre saw.
The
down.

Hmmm ... that's good to know. I had the same result with trying a jig saw --
kept getting an angular cut everytime. Finally realized the blade was
bending as it traveled forward in the cut. Many things to learn, huh ?
 
 
 

cheap electric compound mitre saw vs. dedicated metal cutoff saw

Post by andrew Gam » Tue, 06 Dec 2005 21:38:26

I hate to reply to my own post, but just to clarify the blade I use is
nonabrasive. It has smaller teeth than a wood blade. I only cut 3-4mm
aluminiun and I have had no heat problems. However it is quite noisy
but once aligned it very square.