On 26/02/2018 19:18, stuart noble wrote:
On Monday, February 26, 2018 at 7:09:26 PM UTC, Martin Brown wrote:
On 26/02/2018 17:07, Huge wrote:
On 2018-02-26, Martin Brown wrote:

[26 lines snipped]

Drilling it with the largest long drill bit you can find and loading the
holes with dry potassium nitrate

Good luck buying that these days.

It should be in most garden centres as fertiliser. Or Amazon:

https://www.amazon.co.uk/Potassium-n.../dp/B0166MYGGE

eBay might well be cheaper. Sodium Chlorate is much harder to obtain.

--
Regards,
Martin Brown

A post shoe and rawlbolts for me
https://www.toolstation.com/shop/p58942


I was going to suggest bashing a Metpost spike into the remains of the
wood. Post shoe is probably a better idea. But, I wouldn't do rawlbolts
(the concrete block probably doesn't have a nice flat square top). I'd
drill four holes as deep as possible, 12 or 15 mm diameter with pitch to
suit the shoe, then inject polyester resin and set lengths of 10 or 12
mm zinc plated studding into them, ensuring that they are all more or
less vertical and that the post shoe still fits over them. Or stainless,
if you want to be posh. When it has all set, you can make a level
"platform" for the bottom of the post shoe with four nuts and large
washers, add a bit more concrete up to the platform level and, while it
is still wet, bolt the post shoe down into place.