Starrett Diamond Dri-Core Drills - BMC107 Dry Cutting Core Drill - For Brick Blocks Granite Masonry - 107 mm

I have a hole in the wall. What more could I ask for?

I suppose the test will be after it’s been used 10 times, but unfortunately as is probably the case for most people I’ve only needed to use it once. What I can say though is it was very efficient went through a cavity red brick wall like butter. No signs of any of the teeth breaking off. I’ve boxed it back up and it’s in my workshop. I needed to do another hole for kitchen overhead extractor fan at 150mm so I’ve bought this one as well. It seems to be good enough quality and it isn’t too badly priced though don’t forget the sds adapter and be sure to church your drill has a clutch because it does grip on the way through

i use it for coring out for fan ducting.

I planned to core out a hole for a flue. Fortunately, the replacement boiler also had an off centre flue so I didn’t need the drill. It did arrive on time and quality looks good. . 🤞🏿

Needed to put 2 vents through a 9 inch concrete wall. This did the job perfectly. Looks like it would do a few more easily. Don't know how it would hold up if you were using it every day. But it did what I needed it to do watch out for some of the arbours that Amazon recommends with it. Some arbours aren't straight and cause a wobble that will both make the job harder if not impossible and make your wrists ache. . If it doesn't spin without wobble on the drill you're going to have serious issues

Used to core through 9 inch 7n concrete block wall. If using dry remember to clean away dust regularly as it causes the core bit to jam

This is good value compared to a lot of others on the market. You never know if something like this is going to be any good but thought that going with Starratt it gave me a bit of confidence. The first hole I drilled was really tough but that could have been site conditions and I have since drilled at least 10 holes and it’s holding up really well. I’ve bought a 2nd one as a spare as I always use this size for boiler flues.Top marks so far.

I have used this 117mm core for over a month on over 30 vent holes so far with a dewalt core drill in brick, hollow block and solid walls. It even drilled through a fishtail tie(a strip of galvanised steel between brick walls for those who don't know)when I was coring through brick with no problem or damage to the teeth. The diamond teeth still look like new. Will see how it does in harder materials. Sure it's not a marcrist but it's great value at 1/3 of the price.If you don't already have an Arbor and guide drill you'll have to buy them separately.If you're going to buy this for DIY, please use a proper diamond core drill. If you want to use an sds then please make sure it has a good safety clutch, a lot of the cheaper drills don't. If the core jams in the wall then a drill with no safety clutch will more than likely break your wrists, throw you off a ladder or worse.