On Saturday 15 February 2014 11:56:07 Dave Cole did opine: > This is the nicest abrasive chop saw I have seen period. > > http://www.northerntool.com/shop/tools/product_200307899_200307899?cm_mm > c=Google-pla-_-Power%20Tools-_-Saws-_-M0510&ci_src=17588969&ci_sku=M0510 > &gclid=CK6J3bCWzrwCFQtgMgodu2QAoA > > I used one the other day. > I think Milwaukee has been making this same saw for quite a while. > It turns at 3900 rpm which I think is what my Black and Decker turns at. > > It is far from quiet also .. about as loud as my Black and Decker. > Everyone in the shop knew I was running the chop saw! > > The blades abrade the steel, basically grind it away. They do not > operate like a friction saw as their speed is way too low for that. > Still, a good blade will chew through many square inches of steel.
That can friction cut at 2500 revs, I did it with this one yesterday, but you need 40 lbs on the handle to get the fire started, and 20 to keep it going. Thats BS. A 14" blade should turn around 5400 revs, 5 lbs should start the fire and 2 should maintain it. Wheel wear is 95% in starting the fire, once its going its very low wear on the wheel once its truly cutting by fire plus the air pumped into the cut by the blade. > I know what you are talking about when it comes to a true friction > blade. > http://www.slitting-saw.com/friction-saw-blades-for-metal-cutting/ > > I don't know if you have seen these or not, but I have used a couple of > these to cut steel plate and bar. I have one of these blades in a > heavy 15 amp worm drive circular saw and it will cut steel plate > effectively and quickly. There are a few different manufacturers of > these steel cutting blades. Although it says it is for less than 1/8" > thick steel, I have cut 3/4" plate with it without problems. > And it cuts amazingly fast. Just have to make sure you wear gloves and > a face mask as it throws off hot chips. > http://www.ebay.com/itm/MK-Morse-CSM72568TSC-Metal-Devil-7-1-4-68T-Thin- > Steel-Cutting-Blade-/261377968960?_trksid=p2054897.l4276 > > As I recall, the blade that came with my Black and Decker was a very > fine grit as I believe a lot of these chop saws are used to cut steel > studs which are thin sheetmetal. > The better blades I have used have been of coarser grit which cuts > through steel bar a lot better than the fine grit wheels. The coarser one will be better at carrying air into the cut to feed the fire. Either will need dressed per cut with an si-carbide brick to keep it round. Way too slow, wear on the wheel is very fast. > Dave > > On 2/14/2014 8:28 PM, Gene Heskett wrote: > > On Friday 14 February 2014 20:25:55 Andy Pugh did opine: > >>> Don't waste your money on it, the blade only spins 2800 rpms, and > >>> you have > >> > >> Internet reviews are good, but there are some saying that the > >> supplied blade is hopeless. Might be worth trying a different > >> blade. > > > > No blade is going to work well when its turning half its blowup speed, > > not in that sort of service. Once you get the fire really started, > > actual blade wear is minimal, its only duty is to carry a fresh > > supply of oxygen to the cutting face. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Android apps run on BlackBerry 10 Introducing the new BlackBerry 10.2.1 Runtime for Android apps. Now with support for Jelly Bean, Bluetooth, Mapview and more. Get your Android app in front of a whole new audience. Start now. http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
