One more update:
I have gone back to using borosilicate adapters with the torch. The quartz piece is not ideal because it takes a lot more gas to get up to temp, but does not deliver that extra heat for a longer time as it is largely stored in the solid quartz rings that are not in contact with the airflow. The space inside the piece does not hold enough beads. It would probably be OK with a coil but there's room for improvement...
I got lucky with an ebay chinese seller who seems to have good quality borosilicate because I've been using their 14/18 adapter for 3 weeks now (firing it several times a day) and still there are no cracks.
(currently out of stock )
The 14/18 adapter is the perfect heater (14mm end on top) as the bulge in the middle gives space for the right amount of beads that can hold enough heat to finish the bowl... A bigger 18/18 adapter with more beads takes longer to heat up but does not perform any better.
(sorry if I'm hijacking the thread which says "with coil" in the title! can start a fresh thread if preferred)
I have gone back to using borosilicate adapters with the torch. The quartz piece is not ideal because it takes a lot more gas to get up to temp, but does not deliver that extra heat for a longer time as it is largely stored in the solid quartz rings that are not in contact with the airflow. The space inside the piece does not hold enough beads. It would probably be OK with a coil but there's room for improvement...
I got lucky with an ebay chinese seller who seems to have good quality borosilicate because I've been using their 14/18 adapter for 3 weeks now (firing it several times a day) and still there are no cracks.
Glass Bongs Adapter Male to Female Joint 14mm 18mm Female to Male Convertey1PTUK | eBay
Material: high borosilicate glass. Color: As Picture Show.
www.ebay.co.uk
(currently out of stock )
The 14/18 adapter is the perfect heater (14mm end on top) as the bulge in the middle gives space for the right amount of beads that can hold enough heat to finish the bowl... A bigger 18/18 adapter with more beads takes longer to heat up but does not perform any better.
(sorry if I'm hijacking the thread which says "with coil" in the title! can start a fresh thread if preferred)
Last edited: