Backbox

Argyll · Post by **Argyll** » Thu Dec 09, 2021 3:38 pm

What size of backbox do you think I'll need with this? The description doesn't say.

I'm hoping a 25mm will suffice.

https://www.toolstation.com/axiom-13a-fused-spur/p95225

kellys_eye · Post by **kellys_eye** » Thu Dec 09, 2021 3:51 pm

Get the deepest that will fit the recess. More room is better than too little. Nothing lost (except maybe a few pence) by using the deepest that fits - and if it doesn't fit the 'deepest' then you can't use the spur anyway!

Argyll · Post by **Argyll** » Thu Dec 09, 2021 4:01 pm

T

kellys_eye wrote: ↑Thu Dec 09, 2021 3:51 pm Get the deepest that will fit the recess. More room is better than too little. Nothing lost (except maybe a few pence) by using the deepest that fits - and if it doesn't fit the 'deepest' then you can't use the spur anyway!

47mm seems excessive and will take me ages to dig out. Gonna go with 35mm.

Someone-Else · Post by **Someone-Else** » Thu Dec 09, 2021 4:16 pm

Just asking, have you not got an SDS drill?

Usual way is to drill holes round perimeter, then corner to corner, then a few more, then use chisel bit to take out whats left.

Neelix · Post by **Neelix** » Thu Dec 09, 2021 6:33 pm

Never use 25 mm back boxes is my advice

Grumps · Post by **Grumps** » Thu Dec 09, 2021 8:46 pm

Made me smile regarding the Item Desription.

This device is suitable for high-voltage kitchen tools such as ovens, dishwashers, fridges and washing machines.

Whilst reinforcing the concept of the female being a 'domestic engineer' it blatantly ignores the 'current/power' requirements appropriate to the listed items.

Who the hell do they employ to write these things? :dunno:

I'd never use a 25mm box either.

Argyll · Post by **Argyll** » Fri Dec 10, 2021 12:52 pm

Someone-Else wrote: ↑Thu Dec 09, 2021 4:16 pm Just asking, have you not got an SDS drill?

Usual way is to drill holes round perimeter, then corner to corner, then a few more, then use chisel bit to take out whats left.

It's called stitch drilling. Yes I have several SDS but I see no point digging out more than I need. I opted for the 35mm. It's in now.