Expanded polypropylene is highly desired for fabricating small remote control airplanes and uavs . Its high impact stability low material cost and low weight makes it very good for this role . However the two main ways of manufacturing parts from the raw material have drawbacks . Molded EPP makes a great finished product and can be produced in many shapes including compound curves and can have a smooth finish. the major drawback is the high cost of producing the molds and the production machinery. The other method used is hot wire cutting . the start up cost is much less expensive, however it cannot produce compound curves and the finish is very rough, which can produce unwanted drag in an airplane design.
Wanting the best of both worlds , I came across this blog on what has been termed " the new stuff ". I ordered a couple roles and began playing with it when it arrived. I was very impressed and decided to use it on my next version of the techpod it went on like butter , very smooth , easy to manage wrinkles and adds much structural strength to the EPP. over all this technique is about the same weight per square inch of wing as molded EPP.
I am very please with the outcome and very happy to share this with the hobby uav community at large.
Read more here http://community.evuas.com/pg/blog/EVUAS/read/205/epp-covering-technique-the-new-stuff- and yes i will be offering small quantities at good prices on the EVUAS store soon
Comments
Thank you . your support means a lot to me . right now selling an airplane means my family eats !
and here is my techpod1.1 covered with it