Discuss 32mm Holesaw in Metal Consumer Unit knock out - balls up! in the Industrial Electricians' Talk area at ElectriciansForums.net
For me make a new plate and pre drill this so fits nicely over balls up and your glans holds it all together !
Not any help now, but you could possibly drill a smaller hole and then open it up with one of those cone cutter things, designed to open metal holes up.
Apart from being made by silverline and sold by CEF it looks lovely
Yes I know! BUT it shows that they are available up to & beyond 32mm ....... I thought the biggest was 22mm.
That said, it's not something that you use all day everyday so for the occasional use it could ok PROVIDED you keep the speed (RPMs) down & use plenty of lubricant.
And there's always this:
I don't think you should be drilling the knock-out smaller than its intended diameter in the first place, you should either remove it entirely or not use it at all. Problem is if you drill it and fit an SWA gland there's a good chance it's going to break free anyway at some time in the future. The CU manufacturers should stop catering to DIY'ers and fit a proper gland plate that doesn't have pre-perforated knock-outs or leave the side and back walls without knock-outs assuming they're strong enough to take SWA glands without distorting.
Ohhhhhhh now we are talking. Great for making holes in stainless
Doesn't help your situation but in future get the Hagar boards that have no knock outs if you are going to drill it out.
They do make both
I have not yet fitted a metal domestic board yet, and have to say I am not looking forward to it, I can see them just being awkward and problematic.
Yep, used them plenty in my "making XLR patch panels" days... I'd actually forgotten they existed... so cheers!And there's always this:
you can get 51mm step cutters now.Yes I know! BUT it shows that they are available up to & beyond 32mm ....... I thought the biggest was 22mm.
That said, it's not something that you use all day everyday so for the occasional use it could ok PROVIDED you keep the speed (RPMs) down & use plenty of lubricant.
And there's always this:
Not a bad idea at all. I wander whether the knock out would still hold firm though. Malcolm's idea should allow for the hole to be drilled neatly. Silly design by the manufacturers, they should have a couple of different options for the actual enclosure. Maybe they should do a bit of market research, asking sparks their views..
I emailed Hager about this exact problem over 6 months ago. Never heard anything back. I too had to drill out the board and there's little tolerance/ room for error. The old metal hager boards with the plastic fronts had 20 and 25mm round knockouts. Personally if I need to secure SWA now I'll choose another make of board instead.
Reply to 32mm Holesaw in Metal Consumer Unit knock out - balls up! in the Industrial Electricians' Talk area at ElectriciansForums.net
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