So there I am with a pack of M12 flange nuts and lots of threaded rod, and I need an 18mm spanner...
Except the first set I try goes from 17mm to 19mm, so I look at my socket set, same. Another socket set, same. The deep socket set included with the pneumatic impact wrench, same again!
In comparative ignorance here, but isn't 18mm 3/8" Whit and/or 7/16" BSF? I have sets of Whit and BSF spanners from the days of tinkering with my MG TC.
I recently had to buy an 11mm Allen key. Thanks to the internet they are not to difficult to get, but in the past I saw the solution was to file down the next size up.
I always wonder at the 'missing' 12 or 13 mm spanners as both sizes are very common, in fact it seems quite common to have 12mm bolts with
13mm nuts which can be very confusing sometimes.
I have so many socket sets around that I think I can find every mm size from 4 (or even less) up to something well past 30. I just needed a 27mm (for removing FJR1300 rear wheel - puncture!) and I have a 3/4" drive set with that. I have got some 46mm spanners and sockets, for the tractor. With the addition of AF spanners (of which I have a multiplicity) I can fit most nuts. (Hmm, is there a double entendre there?)
I recently bought an inexpensive set of Forstner bits going from 14 to, IIR C, 25, then a few larger ones. Total of 16. A large part of the reason was that all my other big hole bits (spade and Forstner) were both pretty crap and I always ended up needing sizes that were not included in sets. For exa mple, a current Bosch spade bit set has 12, 16, 18, 20, 22, 25, 28 and 32mm (and listed at £17.99 from Screwfix) - in my book, stupid gaps.
For a particular purpose, I'd bought one fairly cheap eBay 24mm Forstner bi t and it worked very well. Hence, pushing the boat out.
For less than £12 they are actually quite good. Sharp and clean cuttin g.
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