Hey there,
In my neverending quest to get as blowed as possible, a close like-minded companion of mine and I have invented a new device that blows away any bong or pipe we've ever hit (same goes for anyone that's tried it). It is a spin-off of a gravity bong. It is similar to the Blisset Bucket, though it has many many improvements over this design.
We plan to patent it as soon as we have a viable prototype. Currently we have one in use (out back in the treehouse for serenity), but we do not wish to just make a bunch of gravity bongs and sell them. We would like a professional product, with an enclosed top to prevent spills and very uniform parts. I have located almost all of the parts we will need, taking into consideration the dangers of PVC when burned.

Now to my question: We still have not located the downtube (female piece) for the device. It will need to be almost a foot and a half long, making glass impractical. It will have to be able to have very small holes drilled into it, and it must not release fumes at fairly high temperature (right underneath the bowl). The most important part is that it needs to be clear (don't you just love watching 3 liters of smoke pour through this tube and bubbly bubble up into the chamber?).
I was wondering if acrylic tube meets these requirements, though I doubt that it does considering acrylic bongs sold at head shops all have a metal downtube. I did not want to go with metal since it is not clear.

When we are done with the product, we are considering attaching a magnifying glass to the top on a swivel for solar puffing this humongous and very smooth hit.
I would highly recommend going out and building yourselves a Blisset Bucket (especially if you're in an area where high-grade is hard to come by, though high grade is especially gratifying in the device) and you'll get an idea of how this amazing contraption works.

Thank you. I hope some of you knowledgeable potheads out there has a solution for me.

Stoned Wheat Thin
Stoned Wheat Thin Reviewed by Stoned Wheat Thin on . Safe downtube for my GB invention Hey there, In my neverending quest to get as blowed as possible, a close like-minded companion of mine and I have invented a new device that blows away any bong or pipe we've ever hit (same goes for anyone that's tried it). It is a spin-off of a gravity bong. It is similar to the Blisset Bucket, though it has many many improvements over this design. We plan to patent it as soon as we have a viable prototype. Currently we have one in use (out back in the treehouse for serenity), but we do not Rating: 5