I did try to explain that to him much earlier in this thread, so did Carrion and now you attempt it. With luck he'll accept it from you - abut I suspect he won't. Good luck.

Hum, did you just open a can of worms?

As you are a mechanical engineer you will understand the costs involved in delaying any current production, setting up and procurement of materials to create a new product.

So far a handful of people have indicated they would buy - you yourself stated you would buy 5. Just how many units do you imagine FT would be willing to commit themselves to buying based on vague promises from a few forum members if they can find a manufacturer to make a small batch order and negotiate a price?

Low volume manufacturing is expensive, just how much would you be willing to pay to acquire a 21700 SMPL - if you are thinking it will only be a few dollars more than the current 18650 SMPL I think you are in for an unpleasant surprise

Same here -

21700 Brass Bestia ($15)
21700 Brass Vindicator V1 ($20)
21700 SS Vindicator - later Constant Contact V2/3? ($20)
21700 Brass Vassling Overlord ($20)

and brass clones in the $30 ballpark )

Purge Truck (20700 but will house a Samsung 30T 21700)
Purge Viper 21700
Purge B2B 21700
Purge B2B 21700 Knurled
Purge B2B 21700 scroll engraved
Rockvape Titan 21700
Comp Lyfe HK LA Edition 21700

and for about $35

Purge Slam Piece 21700

admittedly I don't mind weight in a mech but they are for home use only, but the 21700 Bestia is light, reliable and cheap with none of the voltage drop problems of the SMPL switch. I don't really see any point in a 21700 SMPL as there are so many good 21700 clones currently available

Yes you are right, that was not a good idea,
but we see, the sleepy FT forum members can move,
very good actions in this tread, not bad,

Thanks CC, a very good list, good job.
May I ask you, which mod has no side fire and is below 140g ?

And sorry about my heavy attack, this circlip story was too much for me.