Re: Roto molded fuel tank modification?
Howdy Hoo. Plastics is what I know, so perhaps I can help here. Chief is correct on material (polyethylene). Heating it up is a little awkward. If you overheat a specific spot on it too much, you can invoke material degradation, which will make a hardened spot that will crack (or dissentigrate). So with that NEVER use direct fire, flame, or high heat producing items that target areas (say like a heat shrinker). <br /><br />An oven might be plenty ok for this (thats what we use in the R&D department to tweak and fiddle with concept prototypes). Be careful when done that you don't make any areas of material too thin, because whatever you do to shape the material, you will be stretching areas and therefore thinning them.<br /><br />Also on the fill neck, be very careful not to warp the neck and threaded area. Will cause leaking if you can even get the cap threaded back on. Even if you leave the cap on to maintain shape, it can still warp, because the cap is thicker and usually it is injection molded, meaning different grade of material, which means it will react differently than the neck of the container.<br /><br />Just some thoughts.
