Dremel Line and Circle Cutter

I needed to be able to cut a circular base from MDF and this was the perfect tool. With just a pilot hole for the circle cutter's pivot point I was easily able to use a rotary cutting bit for my Dremel 3000 to complete a perfect circle. There was some blowout of the MDF at the bottom but that could have been easily resolved by cutting slower and/or starting with a shallow groove cut followed by deeper cuts until it was cut through. It does what it's built for, and I'm no expert.

this gets 5 stars and a thumbs up from me because it does exactly what it's supposed to...i bought it to cut a hole for a speaker in a DIY back surround (6.1) speaker (i just wish i'd bought it for the initial 4 holes i had to cut)... you do need to take your time with it. for 18mm MDF i did 3 passes with my Dremel attached to the hole cutter, but for the last cut i freehanded it because it was just a case of finishing off the already established cut..... when i first constructed this speaker/box i had 4 holes to cut initially for 2 woofers & 1 tweeter, and a port, but thought i could fabricate something similar to this hole cutter and cut the holes that way, however this Dremel tool has been designed with thought, and doesn't slip or move away from the hole centre when cutting (unlike my hastily cobbled together contraption). definitely worth buying for Dremel-related activities, or DIY work. as said above; it's not a router, but it does work as it's supposed to just to add: the accompanying pic is of the back of the speaker which i mentioned. the thing in the middle is something i put in temporarily to stop the cut-out falling into the enclosure

This is a very handy little device for when you need to route something and don't want to put the effort in, or don't own a router. You screw your Dremel into the holder with a suitable bit, set the plunge depth and you're good to go. You do need some kind of guide, a piece of 2x4 or similar will do the job - any straight edge. The crosspiece on the device is a bit wobbly and it doesn't actually align straight enough so if you're trying to drill through some tougher material it's liable to wiggle a bit. For something like perspex or acrylic though, this is great. It struggles on thicker wood, I tried to route some 0.5" MDF and it was OK, but the Dremel wasn't really up to it. The bit kept on snagging and the aforementioned wobble stopped me from really doing a good job of it. Bottom line is if you need to do big straight things, most of the time a cheap saw will do the job faster and cleaner. The circle cutter works in a similar way, there's a pin which you whack into your material and then rotate the Dremel around it. You're limited to a fairly small size and frankly using a hole saw is a lot easier, but if you need to route an arc or something similar then this might just be what you need. Again though, the slightly poor construction means you can't guarantee a quality finish on you work. Should you buy it? Probably, it's a cheap attachment and doesn't seem to be nearly as bad as some of the Dremel products (e.g. the drill press). If you're only cutting soft woods and plastic then you'll have no problems at all. Harder and thicker products will struggle. I haven't tried metal, but I suspect if you were slow you could easily cut thin sheet aluminium.

Great item for cutting straight lines. I needed to make a laser shield for my CNC machine and so straight edges were necessary. I opted for this as I knew the cuts would be less than 11cm from the edge of the laser shield acrylic (11cm being the maximum for straight cuts. It's 30cm diameter for circles). The ease with which this did the job was amazing. Each cut took less than a minute and the item provided straight lines each time. I would recommend this product if you want to achive straight lines but don't forget the 11cm max depth... So if you want to cut something say 20cm from the side of the material it won't help.

product ok but sometime tries to wander

I used this to cut a 250mm circle in the ceiling for a Vent-Axia diffuser, so easy to attach to the Dremel and cut a perfect circle in under 3 minutes. Very impressed

Very easy tu use! I used it to cut holes for some downlights and the result was excellent. Just remember to use some masking tape or it will mark the ceiling

Love it! Managed to cut out circles in gyproc to fill existing holes as I'm moving my recessed lights and they're a different size so not reusing new cut outs. Easy to figure out seems well made. Straight lines will be a doddle using this.