Customer Reviews

Dremel 670 Mini Saw Attachment

5 star:		(6)
4 star:		(9)
3 star:		(3)
2 star:		(2)
1 star:		(4)

 

 

Dremel had a saw blade bit an number of years ago but withdrew it, probably because there was no blade guard. Now they have solved the blade guard problem and by angling the tool a bit have made it able to cut in the center of a board. It took a little getting used to before I got comfortable with it because the guard tends to fight you a bit until you develop the technique to open it properly as you start the cut. It is limited to 1/4" depth of cut making it specifically a modelers tool. When used for what it does best, it is great.

I use my mini-rip saw all the time; it's absolutely essential to my art work. But I can't recommend it without a few comments.

First: that safety housing around it is so bulky that you cannot really see where the blade is going to go, exactly. This is fine if you're cutting something roughly, and you don't care within an 1/8 of an inch where the blade touches your work, but otherwise it's maddening. When I first bought it I tried it for a few cuts then put it aside to return. Instead what I did was attach it into one Dremel and use my other one, with a diamond cut-off wheel inserted, and lop the whole front of that silly cage off. If you do this, be mindful of where it is sealed to keep in the lubricating oil, and leave the back face of the safety on to help you keep the blade straight up and down. Once you do this little surgery, of course, you're out of warrantee, but then, WOW! this little guy is super handy! It's a detail saw with a dream-kerf of about a millimeter. Make SURE you wear goggles, now, dust and bits are going to fly.

Second: I don't know the solution to this second problem. I used my mini-saw so much, for so long, cutting through tempered hard-board that the blade got quite overheated and warped. When I finally realized I should have changed it a while ago, I found that the screw holding it in had fused to the blade and I couldn't get it off. The spindle-lock for the tool gave out before the screw moved, and I ended up bending the shaft of the saw trying. I would have returned it to Dremel, but since I had cut off the safety as I described, there was no chance. Ultimately I decided I had gotten far more than my money's worth out of the tool anyway, and bought a new one. I still use it every day. I guess I'm just going to have to be careful to change the blade sooner this time.

I am amazed at the clean cut that this saw makes. I suppose it depends on the material you are cutting, but more often than not get a smooth, precise cut with no ragged edges. The saw is also remarkably easy to guide and cut a straight line. It's very well put together and I've had no negative issues with it whatsoever.

I bought this to trim some 1/4" plywood from underneath a cabinet (couldn't get a chisel in there) and it worked just OK. To cut about a 1 foot section took about 10 minutes with a ton of burning and smoking of the blade and grinding to a halt (absolutely no torque) when met with a bit of resistance. It might work ok for balsa wood, but for anything else it is too weak a blade (carbide tipped would be better). Also, the blade guard is annoying because you can't get flush up to your edge (leaves about 1/8" or so of wood still along the joint). It's also annoying how you have to change out the head unit of your dremel, making it time consuming to switch back to normal collet and bits.

Fine for cutting thin wood or plastic. I wish it cut deeper - say up to 1/2 inch. Also wish there was a way to manually move the blade protector out of the way while cutting.

This mini saw works great for cutting wood up to 1/4". I've used it for some hobby projects as well as cutting outlet/light switch holes in a sheet of wall paneling. Good tool with a safe design.

It's like a toy saw, the construction quality of the housing is good and sometimes it does work quite well. But the tooth of the saw itself went curved with 2 hours of use, and the dremel tool doesn't have enough torque to work except on the easiest surfaces, maybe balsa or very thin wood.

A big deception.

I originally bought this attachment to use in helping my son build his Pinewood derby car for Cub Scouts. This is a great tool so long as:

1) You don't need to cut more than, say, 3/4ths of an inch in length. Forget getting anything longer in anything like a straight line. You can't see where you're cutting, the grip is awkward, and it moves all over the place.

2) You don't need to cut anything more than 1/8th of an inch thick. Even then, expect the ultra-thin blade to bind like crazy.

3) You don't need to cut anything hard. Thin plywood? Pegboard? A dowel? Hard plastic? Don't even think about it. It might cut (partially) through some nice Chinese drywall or wet cardboard. Provided it doesn't bind first.

In short, I can't see a use for this attachment after trying and failing to use it in several different projects. Maybe you'll have better luck, but you should definitely think twice before purchasing it.

this tool is almost too small. i have found very few uses where a simple cut-off wheel would not do just as well. the accessory does a fine job when you do find the right situation, however.

I bought this tool for my father to attach to his dremel tool to help us fix one of our door frames. We had to cut out a 6 inch section of the frame and replace it. This dremel circular saw tool did the job exactly as we'd hoped.