Is there a U.S. distributor yet?
www.german-advanced-composites.com
Dominik, I think the “german” part in the domain name was not a good idea after all…
That was not my idea, it was the idea of Jürgen. You can also visit www.dd-compound.com and choose the distributor in your country. We also have a distributor in the Netherlands Herman:bigsmile:
A lot of people from west palm Beach and from florida here, maybee we should meet there and make a demo day. I maybe have got a nice location there.
Its not the “german” in the name, its the fact that we still cant go to a website ,scroll thru , then click “buy now”. We got to fill out a request then play email games between each other. No thanks.Its 2013, right? Its not the price,its just a pain in the rear to purchase. Theres a market to fill but…
German Advanced is just working on a webshop. You can also purchase at www.rtmcomposites.com and www.nexeosolutions.com if I am correct. So it should not be a problem tu buy some MTI hose.
good news! rtmcomposites {jhm}
is a about an hour drive away,cool:cool2:. Nexeo is a very large fish over here in n.a. Composite One next? webshop, webshop, webshop…
Sorry guys that it took so long to get the shop online but the original intention of German Advanced Composites was just the US import of the MTI hose in combination with a collaboration with distributors in the USA. JHM Technologies in Michigan is our first partner company distributing the tubing. Nexeo and Profile Composites North America as well as CCP Composites Canada are also interested and has asked for information. The webshop of German Advanced Compsites will be online at the beginning of July at the latest. If you like you can also support our efforts by asking your preferred retailer for MTI hose.
Not sure why its such a big issue, I sent the mail and was promptly sent back a reply with pricing and instructions on how to pay. It was very simple and Juergen Schildgen(designbikes?) has been very helpful with information and answering my many questions. you would be missing a big opportunity to communicate with a very knowledgeable person by not sending that email.
its just as easy to send an email and then a payment as it is to post on this thread.
I am still gathering materials so I can try it out and I will post some pics when I do.
JHM does not list MTI hose on it’s web site.
Works with epoxy or styrene based resins?
I am assuming it is a one time use, i.e. it is not re-usable.
Sold by the foot, yard, meter? hopefully a roll price is available.
here you go.
The MTI hose works with Epoxy, Polyesther, Vinylesther and Polyurethan. Other resins should work but you have to test.
That`s right. They are also working on a new shop (under a new domain) to make all the good infusion material available.
I just couldnt wait any longer to source the proper materials so I went at it with what I had laying around. I did more things wrong than right but still managed to pull off a better part than I have in the past laying up by hand. I always have an area where there is a large or several large air pockets. this has very small amount in it.
I used up all my bagging film, so I used heavy plastic film.
I have no flow media or perferated film so I just went with some screen door screen-2 layers. I had planned to use breather cloth but was told it would only just soak up and hold extra resin on top of my part.
I used very thick resin.1600cps. I was told that heated it would work fine with multiple feed lines.
I sprayed a clear gelcoat and then using the spray adhesive laid some scrap carbon kevlar and then 6 layers of 12k carbon in the thinnest areas and 9 layers at the thickest.
I degassed the resin for 15 minutes, it was pretty warm when I pulled it out, I had the bag already vac down, put the hose in the cup and let er rip, sorta. it took about 30 minutes to go 3 inches across my 12" by 16" part. not good. resin started kicking off and I figured this experiment was a total failure.
since it was already scrap I figure lets just see if the breather would do any better. so I cut the bag open, installed breather over the top and just so I didnt repeat my first test I ran a loop of spiral tubing over the top of that.
skipped the degassing and just let about 9oz of resin go, sucked it up so fast I had to clamp off and make another 9oz. it took all that fast also and was almost to the mti hose which I had set back away from the part on the peelply. so I just hoped I had enough in that it would wet out.
aside from doing everything totally backassward and having a little bit of effort to get the breather off the peel ply it worked. I am sure if I was just using regular spiral tube around the perimeter or had tried to pull across the part it would have been a complete failure. so what I take away is that the hose, despite my setup, saved this part in this instance.
I am still working on getting the correct materials together and feel confident enough to risk a little more material and do a larger piece next.
here is a pic, again Im not sure if I just didnt have quite enough resin or what. maybe some of you have some insight?
Hello,
patience is very important to get perfect Results;)
For the trial with the materials you used this is a very good result.
But for your next try wait until you get all needed materials. Use a Bagging film for infusion, i prefer multi layer films. Also use a thinner infusion resin that can be degassed and has a longer pot life. Also it will work much beetter in infusion of its viscosity, especially with carbon. Heating the resin will make it thinner, but it will even not be thin enough and your pot life will be very short.
Make sure your vacuum system is 100% tight, your vac levbel below 20mbar absolut, your resin degassed, using infusion materials and the MTI hose, than you will get a perfect result.
thanks double D, I knew going in the results might not be good but I was really just wanting to try out the mti hose. the majority of my parts will be colored so it will be difficult to tell if I have small problems. Although I must admit I am thinking about making a lot more visible carbon parts.
For me the fact that I did so much wrong and still came out with a decent part speaks to the effectiveness of the hose.
its a relief to know that when I do my next part with all the correct materials that the results will be the same or better. its nice to have a margin of error. afterall who can be 100%, 100% of the time?
I just set everything up, with some MTI tube, but I find even though i have 27" of vacuum, I cannot get the air in the bag to pass into the tube to suck the bag down, the MTI membrane around the spiral gets all wrinkled but it does not seem to be allowing the air to pass through the membrane,
is there some defective tube out there or what is the problem,
If I turn off the vacuum and blow into the tube the membrane tube balloons but I cannot get the bag to "blow up, the air will not pass out of the MTI tube
Talk about Service!
Just got an email from Jurgen, at midnight, sounds like i have a small leak I have to track down!
Thanks Jurgen!
Just wanted to answer, but it seems that Juergen was faster.
im by far no expert but reading his words carefully it seems to me something is not set up correctly? small leaks aside if he is at 27" the bag should be pretty well pulled down.
can you post a pic of the setup? or at least describe your feed and vac line layout. almost seems to me like you are pulling vac against the bag or something else and not against the whole layup.