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I am looking for advice on thermoforming to make a soaking tub from a 55gal HDPE drum

I thought I could make an inexpensive soaking tub by just fitting up an open top 55 gal plastic drum, but my body will not quite fit when I try to sit in it. I just need a couple more inches for my knees. So after viewing a you-tube on how those barrels are made, I have thoughts that I might be able to re-thermo-form the barrel. The more I think about it, if successful, there are lots of uses. Someone posted that HDPE melts around 265F, so I figure that I could get that air temp easily with a hot air gun, possibly inside the barrel, then using a resealable lid, add air pressure to the barrel and surrounded it with a new rigid mold. If I could figure out how to intrude with parts of the rigid mold, I could even make a seat. As I am imagining, the closer I can get it to the shape of my body in a sitting position, the least amount of water I have to use to fill and heat. And then I could add spray foam to the outside for insulation. Does anyone out their have experience blow molding or other recommendations?

Topic by tesselation  


Why would I need to know the 'extrusion direction' of Lexan?

I bought a small square of Lexan (sheet polycarbonate) to experiment with and noticed on the clear, protective laminate the words: "extrusion direction" and an arrow. I will most likely use this sheet for thermo -forming, but would like to hear any thoughts on how the extrusion direction might affect drilling, cutting, etc. Thanks, Marshall

Question by redplanetcorridor    |  last reply


Where can I get rolls of plastic for thermoforming/ vacuum forming? Answered

I am building a thermoformer that will need 18" wide plastic rolls. Does anyone know where I can get them? They can be any rigid plastic.

Question by galaxyman7    |  last reply


Does a hair dryer get hot enough to thermoform craft foam?

Trying to make armor here, and I haven't worked with foam much. I've got a set design that I want, already worked out and finished in hard clay. Seen a couple people thermoform foam here, and they used a heat gun or the oven. Could I use my mom's blow dryer?

Question by Tess Lucetram    |  last reply


I need to attach a 3/4" shaft to a 1/4" motor shaft. Looking for a place to buy it or how to make it? Answered

I basically need to attach a motor with a 1/4" shaft to a 3/4" threaded rod. I know they make shaft couplers with set screws, but I have not seen one with that big a difference in bore DIA. I attached an image to show you what they look like.

Question by galaxyman7    |  last reply


Model Maker Needed ....

My company is looking for a creative model maker for our model shop department. My company is based in Winston-Salem, NC and specialize in Point of Purchase displays for a variety of different companies. We have in-house engineering, project management, design, and model making departments.  We work with our clients on design renderings and build the physical model to review and approve. The model/prototype can incorporate the following materials: metal, plastic fabrication, electronics, plastic thermoforming, and 3D printing.   If you are interested in making 3D physical models for a Point of Purchase display company, please contact me. I would be happy to go over any questions you have. Joaquin Reyes jreyes@imageworksdisplay.com company website: http://custom.imageworksdisplay.com/ Thanks!

Topic by IWDMGJR    |  last reply