Making Composite Parts - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Race Prep Miata race-only chat.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 05-03-2016, 12:38 PM   #21
Senior Member
iTrader: (1)
 
Join Date: Jul 2012
Location: durham NC
Posts: 767
Total Cats: 115
Default

Another tip- don't buy from fiberglast. Most of what they sell is hugely overpriced and all of their private label stuff is just other products relabeled. For example, their system 3000 epoxy resin is just aeropoxy. $200 a gallon from fiberglast, $140 a gallon everywhere else. I buy fabrics for wet layup from soller composites.
asmasm is offline   Reply With Quote
Old 05-04-2016, 09:34 PM   #22
Senior Member
Thread Starter
 
Join Date: Oct 2011
Location: The Race Track & St Pete FL
Posts: 587
Total Cats: 47
Default

I'm working on the bottom part of the trunk



And if anyone was wondering what I do for a living, well I worked for one of the biggest composite tooling company in the US (Marine Concepts/JRL Ventures). Now I make Carbon Fiber and Kevlar/fiberglass boats for Barker Boatworks

Vacuum Infusing A Fiberglass/Kevlar deck (from today)



Foam core about to go down over the Kevlar



Just done Carbon Hull

Attached Thumbnails
Making Composite Parts-20160502_193639_zpsxixc0c2t.jpg   Making Composite Parts-20160504_074706_zpssluiwb9n.jpg   Making Composite Parts-20160303_172455_zpso6ribhj8.jpg   Making Composite Parts-20160322_090705_zpsgnwpugys.jpg  
1993ka24det is offline   Reply With Quote
Old 05-06-2016, 07:41 AM   #23
Newb
 
Join Date: May 2015
Location: Australia
Posts: 31
Total Cats: 5
Default

I made a hood with the headlight covers built into it (since the head lights no ,on get exist).

I used normal twill weave set (2x2?) top and bottom, 411 x 2 layers and then a 3mm core.

it came up very stiff, and I have track tested it several times.

I also only only did the top of the hood, so there is no bracing and no hinge mounting points.


Last edited by Tim_Aus; 05-06-2016 at 09:07 AM.
Tim_Aus is offline   Reply With Quote
Old 05-06-2016, 03:10 PM   #24
Junior Member
 
Join Date: Jan 2009
Posts: 173
Total Cats: 28
Default

Mmmmmm Barker. Beautiful boats. How'd the performance of the boat with the 7marine and a tower turn out?

Sorry for going off topic
unk577 is offline   Reply With Quote
Old 05-06-2016, 04:17 PM   #25
Senior Member
Thread Starter
 
Join Date: Oct 2011
Location: The Race Track & St Pete FL
Posts: 587
Total Cats: 47
Default

Quote:
Originally Posted by unk577 View Post
Mmmmmm Barker. Beautiful boats. How'd the performance of the boat with the 7marine and a tower turn out?

Sorry for going off topic
83 or 85 MPH, not bad for a $130K engine lol
1993ka24det is offline   Reply With Quote
Old 05-11-2016, 04:18 PM   #26
Junior Member
 
Join Date: Jan 2007
Posts: 218
Total Cats: 15
Default

Subscribed. I've got a fiberglass 1/2 bumper front air dam I need to make a mold of so I can make me some more in carbon fiber. Been struggling with how exactly to make the mold and flanges. I'm thinking I need to separate the air dam from the rest of the front bumper but I worry that it will not be rigid enough if I do that. I think originally they may have taken a splash while the entire front bumper was mounted to the car. I also need to get all the vacuum bag stuff like bags, connectors, etc. for my vacuum pump. I'd also like to try my hand at vacuum infusion process at some point.
freedomgli is offline   Reply With Quote
Old 05-11-2016, 05:00 PM   #27
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

Quote:
Originally Posted by freedomgli View Post
Subscribed. I've got a fiberglass 1/2 bumper front air dam I need to make a mold of so I can make me some more in carbon fiber. Been struggling with how exactly to make the mold and flanges. I'm thinking I need to separate the air dam from the rest of the front bumper but I worry that it will not be rigid enough if I do that. I think originally they may have taken a splash while the entire front bumper was mounted to the car. I also need to get all the vacuum bag stuff like bags, connectors, etc. for my vacuum pump. I'd also like to try my hand at vacuum infusion process at some point.
KYLE please come buy / take my roll of fiberglass matte to make your molds. It is clogging up my basement.

y8s is offline   Reply With Quote
Old 05-11-2016, 05:01 PM   #28
Senior Member
iTrader: (1)
 
Join Date: Jul 2012
Location: durham NC
Posts: 767
Total Cats: 115
Default

Oh, I never paid you for the kevlar. Im not in a rush, just let me know when you have the total with shipping and send me a PM.
asmasm is offline   Reply With Quote
Old 05-11-2016, 09:08 PM   #29
Senior Member
Thread Starter
 
Join Date: Oct 2011
Location: The Race Track & St Pete FL
Posts: 587
Total Cats: 47
Default

Quote:
Originally Posted by freedomgli View Post
Subscribed. I've got a fiberglass 1/2 bumper front air dam I need to make a mold of so I can make me some more in carbon fiber. Been struggling with how exactly to make the mold and flanges. I'm thinking I need to separate the air dam from the rest of the front bumper but I worry that it will not be rigid enough if I do that. I think originally they may have taken a splash while the entire front bumper was mounted to the car. I also need to get all the vacuum bag stuff like bags, connectors, etc. for my vacuum pump. I'd also like to try my hand at vacuum infusion process at some point.
Is it partly stock bumper with added air dam? maybe post #3 might inspire you
Post your DIY Aero - Time Attack Forums
1993ka24det is offline   Reply With Quote
Old 05-11-2016, 09:17 PM   #30
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 17,992
Total Cats: 1,459
Default

Quote:
Originally Posted by Tim_Aus View Post
I made a hood with the headlight covers built into it (since the head lights no ,on get exist).

I used normal twill weave set (2x2?) top and bottom, 411 x 2 layers and then a 3mm core.

it came up very stiff, and I have track tested it several times.

I also only only did the top of the hood, so there is no bracing and no hinge mounting points.
How much did it weigh?
aidandj is offline   Reply With Quote
Old 05-14-2016, 10:53 PM   #31
Senior Member
Thread Starter
 
Join Date: Oct 2011
Location: The Race Track & St Pete FL
Posts: 587
Total Cats: 47
Default

I wanted to see if anyone has worked with Spread Tow Carbon fiber. I was woundering if I could use 2 layers of 160gr/m with a 1/4 honeycomb use for a trunk could be doable

http://www.easycomposites.co.uk/#!/f...ain-weave.html
1993ka24det is offline   Reply With Quote
Old 05-16-2016, 05:27 AM   #32
Newb
 
Join Date: May 2015
Location: Australia
Posts: 31
Total Cats: 5
Default

Quote:
Originally Posted by aidandj View Post
How much did it weigh?
It would be no heavier than 2kg.
Tim_Aus is offline   Reply With Quote
Old 05-16-2016, 03:04 PM   #33
Junior Member
 
Join Date: Jan 2007
Posts: 218
Total Cats: 15
Default

Quote:
Originally Posted by y8s View Post
KYLE please come buy / take my roll of fiberglass matte to make your molds. It is clogging up my basement.
Yes, sir! Absolutely! What flavor beer do you accept as payment? Maybe I can swing by sometime this weekend?

Quote:
Originally Posted by 1993ka24det View Post
Is it partly stock bumper with added air dam? maybe post #3 might inspire you
Post your DIY Aero - Time Attack Forums
Yes it is stock urethane upper, fiberglass lower. Thank you for the link.
freedomgli is offline   Reply With Quote
Old 05-16-2016, 04:12 PM   #34
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

Quote:
Originally Posted by freedomgli View Post
Yes, sir! Absolutely! What flavor beer do you accept as payment? Maybe I can swing by sometime this weekend?
sent you some gmail.
y8s is offline   Reply With Quote
Old 05-23-2016, 10:32 PM   #35
Senior Member
Thread Starter
 
Join Date: Oct 2011
Location: The Race Track & St Pete FL
Posts: 587
Total Cats: 47
Default

This what I mostly work with 1800 18oz/yard 0,+45,-45 triaxial. It is a good structural for things like splitters, floors etc...



It is also used in the BMW i3 and i8. you can see it in the door sills


Attached Thumbnails
Making Composite Parts-dscn5175_zpseixs0n72.jpg  
1993ka24det is offline   Reply With Quote
Old 05-24-2016, 12:36 PM   #36
Junior Member
iTrader: (1)
 
Join Date: May 2013
Location: Sandia Park, NM
Posts: 387
Total Cats: 38
Default

Wow that looks like great material.
I have a hobby ski press and would love to find some of that triax. Any idea what it runs per yard? And can you get 10 yard quantities?
PM me if you'd like to share your source; no one I deal with carries stitched 18oz carbon...

Man and that foam core for the boat... do you cnc mill the entire core?

Some random pics:

Urethane moat pour in the core


Attached Thumbnails
Making Composite Parts-imag0485.jpg   Making Composite Parts-imag0488.jpg  
leboeuf is offline   Reply With Quote
Old 05-24-2016, 08:46 PM   #37
Senior Member
Thread Starter
 
Join Date: Oct 2011
Location: The Race Track & St Pete FL
Posts: 587
Total Cats: 47
Default

Quote:
Originally Posted by leboeuf View Post
Wow that looks like great material.
I have a hobby ski press and would love to find some of that triax. Any idea what it runs per yard? And can you get 10 yard quantities?
PM me if you'd like to share your source; no one I deal with carries stitched 18oz carbon...

Man and that foam core for the boat... do you cnc mill the entire core?

We have a outside company cut our foam kits, but I can't remember from a book but i think a piece of 1/4 core makes the laminate 70X stiffer

What kind of materials are you using now?
Here is some links Triaxial
Multiaxials | PRF Composites

and some other places for other types of carbon

Composite Reinforcement Fabrics : Carbon Fiber Panels/Sheets, Fabric/Cloth, COLORED Carbon/Kevlar, Composite Envisions

http://www.easycomposites.co.uk/#!/f...-reinforcement

http://www.sollercomposites.com,carbon fiber,carbon fiber sleeve,Kevlar sleeve, fiberglass sleeves,carbon fiber fabric,epoxy,west system epoxy,nitrile,gloves,nitrile gloves,aramid,fiberglass,kevlar,tape,biaxial tape, biaxial sleeve


1993ka24det is offline   Reply With Quote
Old 05-25-2016, 12:03 PM   #38
Senior Member
iTrader: (1)
 
Join Date: Jul 2012
Location: durham NC
Posts: 767
Total Cats: 115
Default

Here is a new radiator shroud for my aerocatch latch conversion. Its a 1/16th balsa core layed up wet with 5.7oz twill and envelope bagged with a stack on either side. I won't get a nice glossy surface this way but I will get maximum resin extraction:
Attached Thumbnails
Making Composite Parts-80-douetfv_be6d74b113b3be4a859f82c9b1ad137d0c09a2e7.jpg  
asmasm is offline   Reply With Quote
Old 05-26-2016, 03:49 PM   #39
Senior Member
iTrader: (1)
 
Join Date: Jul 2012
Location: durham NC
Posts: 767
Total Cats: 115
Default

I have been trying to come up with a plan to make a high quality hood without going the prepreg route- The materials cost on a prepreg hood is huge and you would need a 60" wide roll which is generally more expensive/harder to find than a 50" roll. I want to do wet layup and I don't want to do infusion. I also want to make the part as light as possible and extract the maximum of resin that I can out of the part.
My current plan looks like this:
Two layers of 5.9oz 2k twill vac bagged and cured. After curing, lay nomex honeycomb into the mold and one additional layer of carbon. Vac bag again. I think this will work well since I can get maximum resin extraction on each half of the part while still getting a glossy tool surface.

Suggestions for a resin? Carbon in the sun + engine bay heat means it needs to be higher temp than most RT cure epoxy. I have been using aeropoxy and am looking at pro-set. The hood is too big for my oven so I would need something I can RT cure and then do some crude post cure on using either a polycarbonate/wood box and the sun, or some light bulbs/heat gun setup. The pro-set Lam135/224 combination lists a TG of 223f with post cure but the work time on that is marginal for a part so big. I don't want to deal with handling vinylester or polyester resins in my attached garage.
asmasm is offline   Reply With Quote
Old 05-26-2016, 04:00 PM   #40
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

Quote:
Originally Posted by asmasm View Post
I have been trying to come up with a plan to make a high quality hood without going the prepreg route- The materials cost on a prepreg hood is huge and you would need a 60" wide roll which is generally more expensive/harder to find than a 50" roll. I want to do wet layup and I don't want to do infusion. I also want to make the part as light as possible and extract the maximum of resin that I can out of the part.
My current plan looks like this:
Two layers of 5.9oz 2k twill vac bagged and cured. After curing, lay nomex honeycomb into the mold and one additional layer of carbon. Vac bag again. I think this will work well since I can get maximum resin extraction on each half of the part while still getting a glossy tool surface.

Suggestions for a resin? Carbon in the sun + engine bay heat means it needs to be higher temp than most RT cure epoxy. I have been using aeropoxy and am looking at pro-set. The hood is too big for my oven so I would need something I can RT cure and then do some crude post cure on using either a polycarbonate/wood box and the sun, or some light bulbs/heat gun setup. The pro-set Lam135/224 combination lists a TG of 223f with post cure but the work time on that is marginal for a part so big. I don't want to deal with handling vinylester or polyester resins in my attached garage.
The top is easy, paint it a solid color. Or if the rice factor is too strong, a uv protecting clear. Temp wise, insulate, gold foil is probably enough.
Leafy is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
"Project Banshee" Part-Out TheCrazySwede Miata parts for sale/trade 0 05-03-2015 10:17 AM
90 VVT Project Part Out Midtenn Miata parts for sale/trade 24 04-21-2015 08:10 AM
Projects to keep busy while saving for turbo parts... BTMiata General Miata Chat 12 12-28-2012 12:03 PM
1999 Miata project parts Dhaark Miata parts for sale/trade 59 10-23-2011 08:38 PM
Part out to fund my next project or not? DUCATI??? thirdgen Insert BS here 20 05-01-2011 08:46 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:49 AM.