Plese provide feedback on my resin infusion. How can I improve?

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Plese provide feedback on my resin infusion. How can I improve?

Author	Message
LibertyMKiii	L LibertyMKiii posted 4 Years Ago HOT Topic Details
L Group: Forum Members Posts: 19, Visits: 110	As the title states I am looking for feedback on how to make my resin infusion better. How can I do better? I noticed I may wan the peel ply to extend further than the infusion mesh for easier removal. Please provide feedback after viewing my video: YouTube Video link After the infusion there were some parts that stuck to the PVA instead of the carbon. Showing PVA film on mirror surface.
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MarkMK	MarkMK posted 4 Years Ago HOT Post Details
Group: Forum Members Posts: 338, Visits: 2K	I only quickly skimmed through your video with the sound off but a few things you may want to consider: - Try and source some smaller diameter feed tube. Although the part was quite small, it infused quickly and this can lead to dry areas if everything hasn't had time to wet-out properly - If not already doing so, cut your infusion mesh a centimetre or so short of the exit port (placing the port on a separate strip of mesh) which will slow everything down and help ensure all areas of the part have infused properly - Try and source some chemical release agent, as I'm sure that you'll get a much better part finish, especially if infusion onto a mirror/glass panel. PVA is only really useful where you might have a pattern or mould surface that might be a little porous or rough -
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LibertyMKiii	L LibertyMKiii posted 4 Years Ago HOT Post Details
L Group: Forum Members Posts: 19, Visits: 110	+x MarkMK - 8/22/2020 6:45:41 AM I only quickly skimmed through your video with the sound off but a few things you may want to consider: - Try and source some smaller diameter feed tube. Although the part was quite small, it infused quickly and this can lead to dry areas if everything hasn't had time to wet-out properly - If not already doing so, cut your infusion mesh a centimetre or so short of the exit port (placing the port on a separate strip of mesh) which will slow everything down and help ensure all areas of the part have infused properly - Try and source some chemical release agent, as I'm sure that you'll get a much better part finish, especially if infusion onto a mirror/glass panel. PVA is only really useful where you might have a pattern or mould surface that might be a little porous or rough - Thanks all helpful tips. I'll slow the infusion down and look into the chemical release agent. These were just tests. The mold does have some complex 3d shapes...
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DD-Compound	DD-Compound posted 4 Years Ago HOT Post Details
Group: Forum Members Posts: 25, Visits: 1.1K	Hi, what do you plan to infuse? Your equipment is besically fine and your setup also. Problems start in scaling down trials. What works now on the small trial does not have to work on a bigger part. Also checking vacuum with the analogue gauge on the resin trap does not really help. You have a very small volume in your part compared to the volume of the resin trap. That does not show small leaks that can cause big problems. Also regulating the flow as mentioned by Mark helps. That the PVA does not work is unusual. Have you used a base wax before PVA? There are special wax for PVA. Downside of PVA is when you reposition the fabrics that can cause your problem of failing. If you like I can send you some samples and give you a setup
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LibertyMKiii	L LibertyMKiii posted 4 Years Ago HOT Post Details
L Group: Forum Members Posts: 19, Visits: 110	+x DD-Compound - 8/29/2020 8:47:31 AM Hi, what do you plan to infuse?Your equipment is besically fine and your setup also. Problems start in scaling down trials.What works now on the small trial does not have to work on a bigger part.Also checking vacuum with the analogue gauge on the resin trap does not really help.You have a very small volume in your part compared to the volume of the resin trap. That does not show small leaks that can cause big problems.Also regulating the flow as mentioned by Mark helps.That the PVA does not work is unusual. Have you used a base wax before PVA? There are special wax for PVA.Downside of PVA is when you reposition the fabrics that can cause your problem of failing.If you like I can send you some samples and give you a setup The actual part I am working with is a home-made design for a 1/10 scale RC body. It is certainly much more complex than a surface of a mirror. I decided to order chemical mold sealer and release made by frekote / locktite. I suspect this will solve the release issues, and slowing the resin feed will help with the dry spots on the part. Here is 2 images of the mold made of gelcoat and fiberglass. I did a test layup of the carbon and had to use 3m super 77 spray adhesive to keep the carbon in place due to all the complex curves. The PVA lifted off the mold almost immediately when adjusting the composite placement. This was when I pulled the trigger on the chemical mold release purchase.
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DD-Compound	DD-Compound posted 4 Years Ago HOT Post Details
Group: Forum Members Posts: 25, Visits: 1.1K	Hi, sorry for my late reply. That’s not what I would call a complex shape. For a inexperienced person I would suggest to use the MTI hose around the perimeter (before someone says I want to make business here I would send that for free) and infuse from center spot. Using flow mesh until 30mm before the MTI hose. Make sure vacuum is below 10mbar abs and pressure drop is not more than 1mbar/min. Send me a PM and I will ship you a sample package
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