Saw a demonstration of this tool http://www.startwin.tv/index.php?&clang=EN today and I was quite impressed. The 4 1/2" hand grinder has 2 counter rotating carbide toothed disks that cuts like crazy through almost anything and without sparks.
Cutting tool
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It looks like an amazing tool but when I see one of these presentations and knowing the brittleness of carbide I just wonder how the teeth can hold up to all the intermittent cutting.
gbritnell
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Saw this on HF website (no pun intended). Looked interesting.
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gbritnell said:
I agree. And, I understand the replacement blades are darn near as expensive as the original tool. Kind of like inkjet printers... give them the printer and sell them the replacement ink!
Chuck
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there was some discussion here about this tool IIRC cuts quicly but it a rough cut.
Tin
Tin
I have one of the Harbor Freight versions... nothing but pleased with it so far.
It cuts fast for sure, as far as it cutting rough that's mostly because it cuts fast, LOL. It's hand guided, so unlike a bandsaw or something where you can line it up first then let the machine cut, you have to guide it the whole way. Imagine a circular saw except you don't have to worry about kickback.... it's still just kind of hard to aim it exactly on a line by eye. If you change your angle mid-cut you get a step or notch.
It would be easier for flat stock if it had a base..... I have been kind of wondering about buying and/or making a base like this one...
http://www.harborfreight.com/safety-guard-for-angle-grinders-45921.html
Ohhh, and blades are $25... or at least they will be if they ever come off backorder.
http://www.harborfreight.com/5-double-cut-saw-replacement-blades-68327.html
As to the carbide holding up to the cuts... the rotational speed isn't as high as a circ caw, so maybe that helps? Also, with the counter rotating bit there's only so deep a "bite" it can take on each tooth. It's cutting action almost seems more like a "nipper"? Anyway, so far no problems but I haven't put that many miles on it.
It cuts fast for sure, as far as it cutting rough that's mostly because it cuts fast, LOL. It's hand guided, so unlike a bandsaw or something where you can line it up first then let the machine cut, you have to guide it the whole way. Imagine a circular saw except you don't have to worry about kickback.... it's still just kind of hard to aim it exactly on a line by eye. If you change your angle mid-cut you get a step or notch.
It would be easier for flat stock if it had a base..... I have been kind of wondering about buying and/or making a base like this one...
http://www.harborfreight.com/safety-guard-for-angle-grinders-45921.html
Ohhh, and blades are $25... or at least they will be if they ever come off backorder.
http://www.harborfreight.com/5-double-cut-saw-replacement-blades-68327.html
As to the carbide holding up to the cuts... the rotational speed isn't as high as a circ caw, so maybe that helps? Also, with the counter rotating bit there's only so deep a "bite" it can take on each tooth. It's cutting action almost seems more like a "nipper"? Anyway, so far no problems but I haven't put that many miles on it.
