I own the DeWalt 15 amp abrasive wheel chop saw and also the Dewalt 15 amp multi cutting carbide blade saw . Bothe are great saws and the key to the abrasive wheel chop saw is to buy the good blades and not be a cheap a$$ and get harbor freight brands of junk . With the better blades you will get a lot less flex , none if you run your saw right , and you will get no glaze on the wheel.
The abrasive wheel chop saws are good saws when you learn to run them as they should and you learn to understand the "feel" for how much pressure to add to the cut.
The biggest reason i also have the multi cutting carbide blade saw is because i got tired of all the abrasive blade dust on the work bench and all over the shop and also you end up with a better cut on the multi cutting saw with no burr to take off like the abrasive blade has.
There are some junk metals that cant / shouldnt be cut with the metal blade for the fact of blade tip damage as well as cutting a group of bars , a chain ect...
I use the multi cutting saw 98% of the time but pull out the abrasive saw for junk metals , bulk group cuts and also if i need to take it somewhere other then my own shop.
#1 Get name brand saws.
#2 Use quality branded blades
#3 learn to use the saw as it should be
#4 The abrasive saw is fine but if you have the money get the multi cutting saw with the metal blade for better, faster cuts and no abrasive dust.
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Pictured is the DeWalt DW872 multi cutting metal saw .