Spraygunning IN-2

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Spraygunning IN-2

Author	Message
Matthieu Libeert	Matthieu Libeert posted 13 Years Ago HOT Topic Details
Group: Forum Members Posts: 955, Visits: 3.4K	Hi guys so I'm still busy making my carbonfiber/kevlar Keeperhelmet http://www.talkcomposites.com/1066/Carbon-Fiber-Goalie-helmet-field-hockey?PageIndex=3#bm1562 So I'm planning using vacuum infusion, but without gelcoat...since I had loads of problems with the epoxy gelcoat So I will do it the same way as EC guys did it with their first tutorial video "How to Do Perfect Vacuum Resin Infusion of a Carbon Fibre (Fiber) Part" I guess well know by all of you here The plan is to clamp of the vacuumhose at the end so I have some "excess" resin to have a nice finish... Is this a good way of thinking first of all? So I was thinking...If I would still have Pinholes or airbubbles, could I be able to spraygun some epoxy infusion resin IN-2 onto the part and let it cure with a good finish? Matthieu Libeert Founder MAT2 Composites X Sports website: www.mat2composites.com
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fgayford	fgayford posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 433, Visits: 1.2K	matthieutje65 (13/05/2012) Hi guys so I'm still busy making my carbonfiber/kevlar Keeperhelmet http://www.talkcomposites.com/1066/Carbon-Fiber-Goalie-helmet-field-hockey?PageIndex=3#bm1562 So I'm planning using vacuum infusion, but without gelcoat...since I had loads of problems with the epoxy gelcoat So I will do it the same way as EC guys did it with their first tutorial video "How to Do Perfect Vacuum Resin Infusion of a Carbon Fibre (Fiber) Part" I guess well know by all of you here The plan is to clamp of the vacuumhose at the end so I have some "excess" resin to have a nice finish... Is this a good way of thinking first of all? So I was thinking...If I would still have Pinholes or airbubbles, could I be able to spraygun some epoxy infusion resin IN-2 onto the part and let it cure with a good finish? Hi Matthieu As far as I know there is now epoxy out there that has UV protection in its chemistry. So if you have a part that will be out side you need to cover the epoxy with paint or clear coat. Automotive clearcoat has great UV protection. Without it your parts will yellow and breakdown. I spray this automotive clearcoat in my mold and when it has cured I then vacuum infuse. It comes out as shiney as the mold surface. Fred
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pedcrist	pedcrist posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 42, Visits: 350	Hi, Fred Tell one thing: how many automotive clearcoat layers did you applied at the mould? Pedro
	Reply Like 3
pedcrist	pedcrist posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 42, Visits: 350	Just two more questions: 1 - What spraygun do you use? 2 - What nozzle do you use? Pedro
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fgayford	fgayford posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 433, Visits: 1.2K	Hi Sure. Spraying clearcoat in a mold is really tricky. I use highly polished molds and a chemlease release agent product that is super slippery. When ever I tried to spray clear it would just bead up like crazy. No matter what I did it would not lay down. I will share my big secret here. Make sure your mold is really warm to the touch. Make sure your clear coat is warm. Now set your gun feed so nothing comes out. Slowly open your feed screw until your are spraying a fog like spray pattern. In other words barely any clear is coming out of the gun. Fog in a light coat and wait 15 seconds. Fog in again wait 15 seconds keep going until you see a perfect wet layer. Just don't get in a hurry to get to the wet coat. Doing this will prevent beading up. By the way you can also spray PVA mixed with some water the same way. Fog it on, not spray it on and it will lay down a perfect coat. Let me know how you make out. Fred
	Reply Like 2
fgayford	fgayford posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 433, Visits: 1.2K	Hi Sure. Spraying clearcoat in a mold is really tricky. I use highly polished molds and a chemlease release agent product that is super slippery. When ever I tried to spray clear it would just bead up like crazy. No matter what I did it would not lay down. I will share my big secret here. Make sure your mold is really warm to the touch. Make sure your clear coat is warm. Now set your gun feed so nothing comes out. Slowly open your feed screw until your are spraying a fog like spray pattern. In other words barely any clear is coming out of the gun. Fog in a light coat and wait 15 seconds. Fog in again wait 15 seconds keep going until you see a perfect wet layer. Just don't get in a hurry to get to the wet coat. Doing this will prevent beading up. By the way you can also spray PVA mixed with some water the same way. Fog it on, not spray it on and it will lay down a perfect coat. Let me know how you make out. Fred
	Reply Like 3
fgayford	fgayford posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 433, Visits: 1.2K	fgayford (08/11/2012) Hi Sure. Spraying clearcoat in a mold is really tricky. I use highly polished molds and a chemlease release agent product that is super slippery. When ever I tried to spray clear it would just bead up like crazy. No matter what I did it would not lay down. I will share my big secret here. Make sure your mold is really warm to the touch. Make sure your clear coat is warm. Now set your gun feed so nothing comes out. Slowly open your feed screw until your are spraying a fog like spray pattern. In other words barely any clear is coming out of the gun. Fog in a light coat and wait 15 seconds. Fog in again wait 15 seconds keep going until you see a perfect wet layer. Just don't get in a hurry to get to the wet coat. Doing this will prevent beading up. By the way you can also spray PVA mixed with some water the same way. Fog it on, not spray it on and it will lay down a perfect coat. Let me know how you make out. Fred PS I forgot to mention. You need to double the amount of reducer which lowers the viscosity.
	Reply Like 3
Matthieu Libeert	Matthieu Libeert posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 955, Visits: 3.4K	thx for sharing that information, sounds like a good idea! Matthieu Libeert Founder MAT2 Composites X Sports website: www.mat2composites.com
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NikCFC	NikCFC posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 61, Visits: 871	As far as pva I can confirm that...many mist coats reduced with water leave a better surface than 2-3 heavy coats, also it dries quicker. As far as clear coat I haven't tried spraying in mold.It sounds like an interesting idea...
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pedcrist	pedcrist posted 13 Years Ago HOT Post Details
Group: Forum Members Posts: 42, Visits: 350	Very good sharing, Fred. Thanks a lot!! Pedro
	Reply Like 3