I have been cutting 5052, 6063, and even some 6061-T6 aluminum on my table saw using a 50 tooth C-3 carbide blade ($10 from HarborFreight) with very good results. Soon I will need to cut some 7075-T73 aluminum sheets (0.160" thick), and given that those have a tensile strength in the 60-70 ksi range, I am wondering if it will be wise to attempt this on the table saw with the C-3 carbide blade. I have a plasma cutter that I can use for this, but the table saw cuts is so much more clean, accurate, and repeatable. Any experiences and opinions are welcomed.
Cutting 7075-T73 on Table Saw?
Jul 21, 2003
4 Replies
Just make sure to use a cutting fluid .........!!! I have found a product that works very well. It is called Fluid Film .......I buy it from a industrial supply house . It is a thick yellow enviromentally friendlier product. I have found very few contamination problems with it ........I use it on all of my cutting and drilling equipment, as well as my sanding disks and grinding wheels The sanding disks cut faster and last FAR FAR longer.............Frank..........Nevarc Marine , Everett WA
Dam right on the kick back. My father that has been a professional wood worker for over 40 years will tell you first hand how fast kick back can happen.
I am extra careful when cutting aluminum on the table saw. The only kick back I have had so far was not with aluminum but when trying to resaw a thick piece of polycarbonate plastic. Lucky for me the plastic was jammed down into the wooden zero clearance insert instead of flying out towards me. During the incident the saw blade came to a complete stop and it managed to break off a large chunk from the supposedly unbreakable polycarbonate plastic.
In any case, when doing cuts up to 6 inches long or wide the aluminum often comes out within a couple thousands of an inch of the desired size. I could never do that by hand with the plasma cutter or chop saw.
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