EL160 High Temp Epoxy Laminating Resin mould laminating

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EL160 High Temp Epoxy Laminating Resin mould laminating

EL160 High Temp Epoxy Laminating Resin mould laminating

Author	Message
K.C.C	K.C.C posted 4 Years Ago HOT Post Details
Group: Forum Members Posts: 54, Visits: 117	Stil nobody more info on the 2 layers gelcoat? Made a new mould with 1 layer and found the only negative side , you need to let the gelcoat cure longer and wait longer for demoulding so you wont get print true of the weave .
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K.C.C	K.C.C posted 4 Years Ago HOT Post Details
Group: Forum Members Posts: 54, Visits: 117	Everybody stil in Holiday ? :p
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Warren (Staff)	Warren (Staff) posted 4 Years Ago Post Details
Group: Administrators Posts: 2.5K, Visits: 7.9K	Sounds like you left the gelcoat a little too long at the b stage before overcoating. Generally that is the main reason you could have delamination between gelcoat layers. Warren Penalver Easy Composites / Carbon Mods - Technical Support Assistant
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K.C.C	K.C.C posted 4 Years Ago Post Details
Group: Forum Members Posts: 54, Visits: 117	+x Warren (Staff) - 1/13/2020 2:58:29 PM Sounds like you left the gelcoat a little too long at the b stage before overcoating. Generally that is the main reason you could have delamination between gelcoat layers. +x Warren (Staff) - 1/13/2020 2:58:29 PM Sounds like you left the gelcoat a little too long at the b stage before overcoating. Generally that is the main reason you could have delamination between gelcoat layers. If this is the main reason than what are the other ones ?
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Warren (Staff)	Warren (Staff) posted 4 Years Ago HOT Post Details
Group: Administrators Posts: 2.5K, Visits: 7.9K	you could have some surface contamination or maybe an old resin that has not cured properly/not achieved its designed mechanical properties. Although both of these are so rare I have never heard of it actually happening although it is theoretically possible. Warren Penalver Easy Composites / Carbon Mods - Technical Support Assistant
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kip	kip posted 4 Years Ago HOT Post Details
Group: Forum Members Posts: 32, Visits: 99	Mpulds are stil working good only weird thing I got is one mould the gelcoat is turning yellow to brown in color . I took a picture of an other mould on it ,both made the same way I got arround 10 eg160 moulds and only one does this . The one that turned brown only had 1 part pulled from it and the other arround 5 parts
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Warren (Staff)	Warren (Staff) posted 4 Years Ago HOT Post Details
Group: Administrators Posts: 2.5K, Visits: 7.9K	Very strange. Did the oven go higher in temperature for some reason? Warren Penalver Easy Composites / Carbon Mods - Technical Support Assistant
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kip	kip posted 4 Years Ago HOT Post Details
Group: Forum Members Posts: 32, Visits: 99	No, there were other moulds in the oven that didn't got the color The part was fine out of the mould but its just strange it looks like this
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carbon man	carbon man posted 4 Years Ago HOT Post Details
Group: Awaiting Activation Posts: 86, Visits: 1.2K	+x K.C.C - 12/26/2019 4:08:11 PM Started with some smaler moulds again today . ad some small high temp epoxy moulds made before and they had no problem and I remember I only used 1 layer gelcoat How are you getting on now? I hate this system! So many delamination and cracks. I literally can't make moulds using 2 layers of gel or it will crack, chip and delaminat iv tried applying the 2nd layer of gel with every different stage of tack. Now I make just using 1 layer of gel. Moulds are better but still after 6 pulls I got a hair line crack. All my moulds are small like 8 inch. I fear if I make a large moulds it will just break! And I'm having to make them really thick using several layers 650g carbon for backing. Let me know if you have a solution. Thanks
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K.C.C	K.C.C posted 4 Years Ago Post Details
Group: Forum Members Posts: 54, Visits: 117	+x carbon man - 10/31/2020 6:21:04 AM +x K.C.C - 12/26/2019 4:08:11 PM Started with some smaler moulds again today . ad some small high temp epoxy moulds made before and they had no problem and I remember I only used 1 layer gelcoat How are you getting on now? I hate this system! So many delamination and cracks. I literally can't make moulds using 2 layers of gel or it will crack, chip and delaminat iv tried applying the 2nd layer of gel with every different stage of tack. Now I make just using 1 layer of gel. Moulds are better but still after 6 pulls I got a hair line crack. All my moulds are small like 8 inch. I fear if I make a large moulds it will just break! And I'm having to make them really thick using several layers 650g carbon for backing. Let me know if you have a solution. Thanks I kept working with 1 layer gel but I do wait 4 to 5 days before demoulding and atleast 7 days before postcuring I'm now testing 2 layers of gel again reducing the time between the layers and at first sight this looks good . Problem also is that when you work with parts that have verry small edges that need to be trim off you need to look out not putting the gel to thin on there Differend thickness of gell, difference in curing. I use first 2 layers of 200G twill 2X2 let this gell up for some time than I add 2 layers 400G twill 2X2 ending with last layer of 200G twill 2X2. And than let it cure for 4 to 5 days. I finished 2 new moulds this week with 2 layers gel , wil keep you posted the results
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