Hi guys,

quite a while ago I came across the MTI hose, developed in Germany. A regular spiral tube (albeit a larger diameter) covered in an air-permeable membrane that is impervious to resins.

Question is, are any of you familiar with this product? They promise cosmetic, pinhole-free surface, without the need for catchpot and continuous vacuum. Was just curious if easycomposites or some of the other pros out there have any experience and if its worth giving a try, looks interesting.

Cheers

Hi, I´m new to this forum but I can tell you something about my experiences with the MTI-hose. I`ve been working on motorcycle parts since 2003 just for private use. These parts are e.g. an airbox seat monocoque, gas tank, fenders etc. and consists of carbon fibre. During that evolution period of nearly 10 years I digged deep into the process of how to produce perfect carbon fibre parts. Starting with open moulds and a wet layup turning to the closed mould process and resin infusion I was never able to produce absolute pinhole free parts. So rework was necessary all the time. Especially the sharp edge design of the new parts I`ve been working on since the beginning of this year forced me to reassess the manufacturing process. I came across the MTI-hose and gave it a try. With amazing success. Since I learned how to make a 100% tight vacuum bag I`m able to produce perfect cosmetic parts. I`m happy with that product since the produced parts are now 100% pinhole free and no rework is necessary. I also use a clear PU inmould coating wich is UV resistant.


Regards