When cutting it with a bandsaw, for instance (if you don't care about the finish, that is), you don't need a very sharp blade, at all. Sharpness helps with getting that bite when you have limited feed pressure and horsepower and/or high surface speeds and/or you want a good finish. If you can't maintain that cut, then you instantly go from cutting to burning your stock and cutter up. Aluminum puts you between the rock and the hard place when your cut is flirting with your max power. Else it smears and creates a lot of heat. But (I think) you also have to take a bigger bite of it to get a chip. Aluminum is gummy and stringy and wants bigger gullets and all. Probably not worth your time unless you are really into sharpening stuff? I also wonder how many people think the manual deburring tool is trash because they used a trash blade on it. Not a trade off that can be compensated for unless you know how to sharpen them with diamonds or whatever is used to sharpen it. Way worse then something like pliers that don't align perfectly or whatever, they just suck. One of the worst Chinese tools I have used. its like using 'magnetic' (steel) fake copper wire in a lab. I want to literary throw away the cheap ones. so I ordered much more expensive good ones. I got two deburring tools, one at sears (still kinda shady) and some crap off eBay, I used up the Sears blade eventually, and I switched it to the eBay crap blade, and it just felt broken. I put a fresh one on, and it still ran horribly. I had a bag of like 30 Chinese ones, and they are just utter junk compared to quality tool manufacturer one ( I mean manual deburring 'scythe' blade). The aluminum burr must be harder to machine (perhaps mass production machines don't exist for weird Al bur geometries)? I got deburring tools, and its definatly worth to get the expensive ones made in USA. !10136!3!416301623456!!!g!812444800533!&utm_arg=SEM:Google:GSN_-_Items_-_Tools_and_Hardware-Other_Abrasive_Products::pla:pla:Airgas:tools_hardware::RAD64006925::PLA&gclid=EAIaIQobChMIz9G元Jn圆gIVlozICh3Ndgq2EAQYEyABEgKIm_D_BwE beware, some of the Al burr geometries for aluminum are seriously expensive ($60 vs normal $20 radnor burr vs $5 ? chinese one). I have used it on lead before and it was fine for cleaning up a casting flashing. I use a big square brush (I think from the paint department). The aluminum file can be cleaned with a stainless steel brush nicely. Other then gumming, the edge is not some how destroyed by the gummyness ? I already use a aluminum file, but the flap wheels and specific burr is new to me. FYI : I used 2 carbide and 1x old tool steel 1/4 inch burs to cut Al gas welds ( excessive material added). I assume its just because of the clogging issue ? I was actually using stainless steel flap wheels on aluminum too, and I noticed they actually sell aluminum flap disks, so I got those and a aluminum grinding wheel. It says not compatible in the radnor catalog. I don't have a good feel for what 'worn' is. If they are considered fucked up I don't want to struggle with them, and in general using burrs is a bit of a pain in the ass. and I don't want to learn on broken tools. I ordered proper aluminum burrs, but are the ones I used still fine? I am basically learning how to use them good, and I did not really cut steel with them. Anyway FYI alumitap sucks and 'light lubricant' seems to be the best for misusing burs (I used the 'precision' electrical lubricant because I happened to run out of wd40). And the dremel has a carbide burr that I think said nothing about not using it on aluminum. the milling machine does not seem to have restrictions for using carbide on aluminum really, at least the proxxon ones). (got lazy, thought alumitap would work because. One of the burrs got clogged and I soaked it in sodium hydroxide to clean it up. If you use a carbide burr on aluminum, in a die grinder, which is says not to, is this because clogging issues, or does it actually damage the edge? I was using one for a while with cutting oil (basically spraying it down frequently) to clean up some welds.
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