Hi James,
As Jeff suggests the Tap & Die Co is within walking distance of Turnpike Lane Tube Station (Piccadilly Line) — see map:

(Click to Enlarge)
I assume you're at West India Dock, Canary Wharf (HMCS Iroquois mooring?) so Tube routes will be:
1. From Canary Wharf Underground station take Jubilee Line train North/West bound to London Bridge.
2. At London Bridge change to Northern Line and take northbound train to Kings Cross.
3. At Kings Cross change to Piccadilly Line and take northbound train to Turnpike Lane.
Alternatively (fewer changes):
1. From Canary Wharf Underground station take Jubilee Line train North/West bound to Green Park.
2. At Green Park change to Piccadilly Line and take North/East bound train direct to Turnpike Lane.
As you exit from Turnpike Lane station head South along Green Lanes (area's mostly built up but green area containing playground will lie to your right). You'll shortly come to a 'Y' junction where road branches off Green Lanes at 45 degrees to your left — that's West Green Road. A few hundred yards along the road (right hand side) you'll find the Tap & Die Co shop. It's quite a modest looking shop frontage — I think the whole building represents their 'warehouse'. Their site says 'visitors by appointment only' but if you ring them beforehand they'll probably be happy to see you in the circs.
Joe
Edited By joegib on 29/04/2013 06:05:47