advice on cutting aluminum extrusion

I will cutting 20' long extrusions that are about 3/4" thick and 2" wide in cuts of 36, 48 and 60". Based on the previous posts, many have
recommended using carbide blades with lubricant. What would be the best cutting saw for this job and can it eliminate burring. I will be doing hundreds of these pieces.
Thanks,
Ken
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

I would just use a non-ferrous metals (carbide) blade in a chop saw with no lube. Greg Sefton
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
snipped-for-privacy@yahoo.com (kenny) wrote in

We use a Dewalt Compound Miter saw with metal cutting carbide blades. Make sure you have the clamps for the saw.
--
Anthony

You can't 'idiot proof' anything....every time you try, they just make
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I recently cut quite a bit of Al. extrusions (I-Beam and Angle) for a set of home-made ATV ramps on a Ridgid chop saw. I used an 80 tooth carbide Dewalt "Fine Crosscut" blade and and a shot of 711 (same as WD-40) for lube. Excellent quality cuts & no problems at all...(except for the clean-up of very fine chips)
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Same as the others said. Carbide metal cutting blade in a chopsaw would be the easiest. High RPM gives you better burrless cutting so use a saw with plenty of power and don't let it bog down too much. If you are going to jig up a machine for production runs (dedicated machine which you will be willing to spend some money on) you might look into a high speed jump saw. With these, the blade is usually raised quickly out of a table slot straight up into the work. Generally they jump via foot pedal operation. Fast way to go when you need high speed production.
The carbide blades for metals are generally triple chip grind. One tooth has a true square top and the next has a flat top with the corners beveled. Oh yea...the blade generally has a negative rake of about 5 degrees rather than a positive rake like wood blades.
Get the best blade you can afford. Don't skimp on quality. One commercial brand is Systi-Matic. A google search should give you links to retailers.
Koz
kenny wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 6 Apr 2004 03:08:37 -0700, the renowned snipped-for-privacy@yahoo.com (kenny) wrote:

You should consider getting the extrusion producer to cut these for you. We've supplied stuff to Indalex, for example, so I've seen their local plant a few times. Huge extrusion machines with travelling saws that match the speed of the aluminum coming out of the die and cut the extrusion to length as it is being extruded. If you have enough lbs for a run, they probably wouldn't charge you any extra for those cuts and it might be less overall than going through a distributor.
Best regards, Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
snipped-for-privacy@interlog.com Info for manufacturers: http://www.trexon.com
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
A recent woodworking magazine author posted a hint for cutting aluminum. He happened to cut through the 2 1/2" long UPC sticker and noticed there was almost no burr. After that he applied masking tape along the cut line.
You might query in the rec.woodworking group, I can't find the issue off-hand.
Joel. phx

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
It works on wood and told/shown to work on metal. Martin
Joel Corwith wrote:

--
Martin Eastburn, Barbara Eastburn
@ home at Lion's Lair with our computer snipped-for-privacy@pacbell.net
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Triple-chip grind carbide blade intended for non-ferrous metals. I like Matsushita blades, Tenryu are also nice. Systi-matic used to be good, but have gone downhill recently.
Hitachi makes the best chopsaws. They cost a little more than others, but are very well built.
For a cutting lube, ZEP BIG ORANGE. ZEP is an industrial fluids company who have distributors in most major cities.
http://www.zep.com /
BIG ORANGE is a high concentration citus based cleaner that is 97% D-Limonene. D-Limonene is the active ingredient in all citrus based cleaners.
This stuff is the best cutting fluid I have ever used on non-ferrous metals. I keeps a spray bottle of it near the saw, and just spritz the blade after every 4 or 5 cuts. You end up with no clogging of the blade, and mirror smooth cuts. The BIG ORANGE has no water in it so it won't rust your tooling. It does react with some plastics. It is non-toxic, biodegradeable, smells of oranges, you can weld right through a puddle of it with no contamination, and it rinses off with water. Great stuff.
Costs about $26 per Gallon.
Another option is a wax stick , but I never have liked them. The wax does interfere with welding is does not come off easily.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Wintergreen oil is an excellent saw lubricant. It's also the secret ingredient in Marvelous Mystery Oil.
wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Tue, 06 Apr 2004 16:28:29 GMT, Ernie Leimkuhler

Unfortunately, quite a few of us are either allergic to orange-based products or simply can't stand the smell. Are there any alternatives?
-- --Pete
http://www.msen.com/~pwmeek /
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

There are commercial aluminum cutting fluids. Unfortunately none work as well as BIG ORANGE. I don't know why.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I simply use a shot of WD-40 every now and again. Kingfish
On Wed, 07 Apr 2004 20:42:24 GMT, Ernie Leimkuhler

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
3-5HP upcut saw with 20" blade at 3600 rpm with lubricant
add a 20' linear positioner while you are at it

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.