By Xtreme - 7/10/2020 6:50:31 PM
Hello ,
This is a great forum and I have gained immense knowledge here . Thank you guys !
After getting all supplies from easycomposites
I infused many carbon sheets on glass and a perfect glossy finish.
This is my first part I’m infusing in a mould.
Attempt 1 - pinholes towards the inlet side and relatively very less towards the vacuum side
( pinholes exactly between the fabric weave pattern )
It’s a 26”x 20” mould vacuum spiral was all around the flange of the mould and inlet in the center.
Mesh was right till the edge of the carbon fabric and spiral over the mesh.
This infused very fast approx 8-10 mins
Attempt 2 - pinholes all over the part. This time I infused from the side. Resin inlet spiral along the 26” side. I cut the mesh short and the spiral was over the peelply and carbon fabric. On the opp side I used two layers of the mesh on the flange and silicon connector in the middle.
This took about 20-25 mins to infuse.
Both times it was a perfectly sealed bag leak tested for 30 mins.
Where am I going wrong ? How do I get a pinhole free finish ?
Also which is the ideal way to place the inlet and vacuum on such a mould .
Really appreciate some help, thanks in advance
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By DD-Compound - 8/23/2020 12:58:25 PM
I thought that the DD Compound in my signature is big enough 🤔
Also wrote several times here that DD-Compound is the producer.
I also agree to Hanaldo that the MTI hose is not a must. But the people how have enough knowledge and work on their own who get good results without tips and tricks is maybe 5%?
People who start or productions that need process stability are most of the composite users.
And also Hanaldo started one day and made his first successful infusions with my help and MTI 😉.
I am proud that he got that much knowledge and understood the process that he knows when he has to do what is necessary. When to degass and when not, using MTI or not, maybe reduce vacuum or not......
As simple as it is it is quite complex at the end of the day.
I am not making any money from smaller customers, usually we send also nice samples to all over the world to help beginners.
My reason to spread knowledge and help do more People understand the physics.
In the infusion industry is so much wrong information going around and also lots of „experts“ have no Clou what they do.
The tips I give here are to help people, and if they are followed you will get a perfect result.
I think it does not help if people just say this and that is not necessary but don’t explain why or just give that info for the special case.
I want to give people a toolbox so they are successful and understand the process. If they do that for a while they will understand more and more when what to do and of course if they are a pro they don’t need everything.
But you will see that if you for example have a big production things are more focused on process stability than on saving in materials.
I do infusions from 100g to 6tons of resin, the physics is the same but lots of parameters change. To much to explain everything so I always try to explain a process that works for 90%.
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