BotusBuild Posted February 14 Share Posted February 14 I have three holes, two of 180mm diameter, and one of approx 100mm diameter (to be confirmed), to be drilled through our 8 inch (203mm) thick concrete walls (and the EPS either side of course). I have an SDS drill and could drill multiple holes and then hammer chisel the holes, but my arms, from shoulders to hands, are really starting to feel the strain of building the house. With these holes all need to be drilled at heights above floor level of about 2m, just the weight of the SDS drill fills me now with dread, although I so have a mobile scaffold that I could sit down on So, I am looking at core drills. Confused.com comes to mind ... Dry vs Wet? As this is inside, I am most likely to go for dry Hand held vs some form of "rig" (similar to this)? Any ideas for how to secure a "rig" at 2m above the ground? Diamond vs Tungsten? Any guidance and pointers where best to hire the right kit please. Pretty please. Link to comment Share on other sites More sharing options...
nod Posted February 14 Share Posted February 14 You can hire a little handle drill and bits Most will do a half day hire Link to comment Share on other sites More sharing options...
BotusBuild Posted February 14 Author Share Posted February 14 2 minutes ago, nod said: little handle drill adding to my confusion what's a little handle drill? never heard of one of those Link to comment Share on other sites More sharing options...
nod Posted February 14 Share Posted February 14 1 minute ago, BotusBuild said: adding to my confusion what's a little handle drill? never heard of one of those Suggested text strikes again 😂 little CORE drill 1 Link to comment Share on other sites More sharing options...
Russell griffiths Posted February 14 Share Posted February 14 Easy option phone a company and get someone else to do it 180mm is very different to 100mm its a massive bit and will be a bastard to use, unless you hire the right kit with pedestal. get a quote, but by the time you hire it and all the agro you might be better off paying for it to be done. 3 Link to comment Share on other sites More sharing options...
saveasteading Posted February 14 Share Posted February 14 3 minutes ago, Russell griffiths said: get someone else to do it 180mm is very different to 100mm It shouldn't cost any more than hiring the necessary kit. 1 Link to comment Share on other sites More sharing options...
Conor Posted February 14 Share Posted February 14 Hire somebody. I got 5x 180mm holes drilled through 200mm RC for £250. 1 Link to comment Share on other sites More sharing options...
Nick Laslett Posted February 14 Share Posted February 14 I was lucky, I was able to have most of the penetrations in place before the concrete pour. I did however have to drill one 110mm SVP hole through 150mm ICF concrete wall and two 50mm waste pipe holes through the same wall. I used my Makita SDS drill with the Erbauer diamond tripped core drill bit from Screwfix. https://www.screwfix.com/p/erbauer-diamond-core-drill-kit-3-cores/96229 The one hole killed the core bit. If you can, I would pay someone to do it for you. 1 Link to comment Share on other sites More sharing options...
Adam2 Posted February 16 Share Posted February 16 Also recommend paying someone. I had similar - all 200mm concrete with a lot of reinforcement a good guy can do quite a few holes in a half day. For mine he bolted the drill to the wall - maybe he could have used a stand for the drill but a few were quite high. A bonus is that the cores are super smooth and with a bit of varnish make a nice ornament. Will post up from my phone 🙂 I've some decent extra long 20mm bits for small hole requirements and they actually work better than expected as long as rebar is not in the way Link to comment Share on other sites More sharing options...
Adam2 Posted February 16 Share Posted February 16 2 1 2 Link to comment Share on other sites More sharing options...
Adam2 Posted February 16 Share Posted February 16 Here it is Link to comment Share on other sites More sharing options...
BotusBuild Posted February 17 Author Share Posted February 17 I was wondering what to make of the 3 cores that I'll end up with 🙂 Link to comment Share on other sites More sharing options...
saveasteading Posted February 17 Share Posted February 17 44 minutes ago, BotusBuild said: cores that I'll end up with 🙂 I used them as door stops in the office or placed on shelves to look suitably techy for the industry. Link to comment Share on other sites More sharing options...
marshian Posted February 18 Share Posted February 18 On 16/02/2024 at 19:56, Adam2 said: Love that - looks superb like a geological sample 1 Link to comment Share on other sites More sharing options...
saveasteading Posted February 18 Share Posted February 18 On 16/02/2024 at 19:46, Adam2 said: the cores are super smooth As a slight divergence...this makes diamond drilled holes unsuitable for anchor bolts, unless roughened up with an sds drill. Link to comment Share on other sites More sharing options...
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