Thanks everyone for your suggestions. Need to go off browsing and hunting now ...
Just lightly pulse your coils a few times and strum them with the tip of your tweezers and they will begin to fire together.
No dice I'm afraid, even tried squeezing them with insulated tweezers. I might do a post mortem and check the physical resistance. I suspect I might have over-tightened one of the Allen screws a bit too much and it it is not making a decent connection.
... if you are mindful of your builds you will be fine.
Am pretty .... about battery safety, am used to working with very high voltages and currents etc. Lost my eyebrows once due to a fellow work colleague who was a complete "$$:#~£. Being flash blinded for 20 minutes is a pretty scary experience.
They last 2 or 3 years but are dirt cheap to replace! about 50 bucks new.
@Susaz, how could you do this to me? In my mounting pile of obsolete and broken kit due to go to recycling is my old coffee machine [pictured], which served me well as you rightly guessed for 3 years. Oh, it was shiny once, and faithfully served me coffee day in day out until the internals would espresso no more. I am now laden with guilt on three fronts, a] I could do nothing for my faithful friend b] I replaced it with a cheaper model and c] That I have to go to the dump. Soon.
Give us some details on what you are looking for.....
I am 85% convinced that a Squonker is the way to go, mainly down to price. In an ideal world there would be a dual use device, but if there is I can tell it would be expensive

. I don't have any fears about electrical safety, I'm more concerned about the following:
- Price point [I am spending my wife's money
]
- Practicality. Ideally I want to take it out and about, and it will suffer as a consequence.
- Quality. Good build is more important than gizmos, and preferably something that doesn't look like it hit every branch on the ugly tree on the way down [which is why I didn't buy a Smok Mag].
- If it takes 18650's or 21750's batteries great. Built in, it would have to have a lot of benefits to convince me, as the device would have a maximum of a 3 year life.