I finally made my first part - Classic mini dashboard


Author
Message
nmicro
nmicro
Supreme Being (125 reputation)Supreme Being (125 reputation)Supreme Being (125 reputation)Supreme Being (125 reputation)Supreme Being (125 reputation)Supreme Being (125 reputation)Supreme Being (125 reputation)Supreme Being (125 reputation)Supreme Being (125 reputation)
Group: Forum Members
Posts: 15, Visits: 151
After a lot of tests i was able to finish my first carbon fibre part.

Even with this part, i have to change the layers setup as you will understand later on.

A friend requested a carbon fibre dashboard for his Classic Mini. I had a template of the part, with the cut's for the gauges and so i started.

As it was a simple part an flat so i just used a glass door of my shop. Cleaned the glass and applied 2 coats of Easylease.
To get that mirror look and get some UV protection i decided to put some GC50 gelcoat.
The GC50 was brushed. As it was curing i started to have some doubts. It started to create some fish eyes

http://www.talkcomposites.com/Uploads/Images/7394051d-1431-4c8d-9953-67e8.jpg

Still i went foward.

Next step, laying the carbon fibre. I have in stock some 200gr profinish and some 450gr 3k twill.
My first idea was to put 1 layer of profinish and 3 layer of 450 gr, but i was thinking the part would be damaged by the gelcoat, so there was no need to waist so much epoxy resin.
That said i did 5 profinish layer and about 240 gr of epoxy resin (the part was 1,30 x 1,00 mt).

I still struggle a bit to get the right calculation of the resin consumption, considering the peelply, the flow media, the resin hose inlet, etc.

The temperature at the shop is not the best for Epoxy infusion (around 15ºC)

http://www.talkcomposites.com/Uploads/Images/a2663890-240b-47ec-9a3a-f369.jpg

I stack the carbon, some silicone peel ply and flow media and "closed" everything with the vacuum bag.

http://www.talkcomposites.com/Uploads/Images/bf2806f3-0c46-4c48-8060-f71c.jpg

Because of the low temperature, the resin took a while to infuse. I heated a bit using a heat gun, but still it took around 20 min to infuse everything.
One advantage of using a glass as a "mould" is that you can see if the bottom is impregnated with resin

http://www.talkcomposites.com/Uploads/Images/1dd7126f-ea95-4d86-b30a-2ff7.jpg

after 2 days curing under vaccum (-1,003 bar according to my SMC vacuum switch) it was time to "demould".

I was very happy with the final result. The 5 layers of profinish turned out to be 1,2mm thickness part.
It was very glossy with no need for sanding at all.

http://www.talkcomposites.com/Uploads/Images/44b9434b-9078-4ff6-bb6e-41bb.jpg

After the cuts it was ready.
In close inspection, you could see those gelcoat fish eyes, but the resin fill them up quite nice
In the photo you can see the GC is a bit blueish, but at naked eye you don't see anything

http://www.talkcomposites.com/Uploads/Images/dc56953d-d2f0-4e64-ad90-97b2.jpg

http://www.talkcomposites.com/Uploads/Images/9d1bb8b5-d372-4e31-853f-aa23.JPG

Any comments and future recommendations will be appreciated.

Cheers 
Brian_s
Brian_s
Supreme Being (791 reputation)Supreme Being (791 reputation)Supreme Being (791 reputation)Supreme Being (791 reputation)Supreme Being (791 reputation)Supreme Being (791 reputation)Supreme Being (791 reputation)Supreme Being (791 reputation)Supreme Being (791 reputation)
Group: Forum Members
Posts: 99, Visits: 2.5K
Try a layer of mould release wax over the Easylease. It will help stop the fish eyes.

Brian.
ajb100
ajb100
Supreme Being (2.6K reputation)Supreme Being (2.6K reputation)Supreme Being (2.6K reputation)Supreme Being (2.6K reputation)Supreme Being (2.6K reputation)Supreme Being (2.6K reputation)Supreme Being (2.6K reputation)Supreme Being (2.6K reputation)Supreme Being (2.6K reputation)
Group: Forum Members
Posts: 346, Visits: 4.4K
Try two light coats of gel instead of 1 heavy one
Matthieu Libeert
Matthieu Libeert
Supreme Being (7.5K reputation)Supreme Being (7.5K reputation)Supreme Being (7.5K reputation)Supreme Being (7.5K reputation)Supreme Being (7.5K reputation)Supreme Being (7.5K reputation)Supreme Being (7.5K reputation)Supreme Being (7.5K reputation)Supreme Being (7.5K reputation)
Group: Forum Members
Posts: 955, Visits: 3.4K
looks like your happy about the results and you have the rights to be happy! looks like you did a good job!
I guess you cant wait now to make more parts after everything turned out well?! BigGrin

Matthieu Libeert
Founder MAT2 Composites X Sports
website:
www.mat2composites.com




wojtepanik
wojtepanik
Supreme Being (755 reputation)Supreme Being (755 reputation)Supreme Being (755 reputation)Supreme Being (755 reputation)Supreme Being (755 reputation)Supreme Being (755 reputation)Supreme Being (755 reputation)Supreme Being (755 reputation)Supreme Being (755 reputation)
Group: Forum Members
Posts: 102, Visits: 582
Hi 
While working with flat sheets I prefer to use wet layup, actually I always use wet, and it always work, very nice-looking part, good job Smile and as said before : one thin layer gel, let it cure to tacky state and then second layer, let it get tacky or even dry completly and proceed normal layup. Don't apply too much gelcoat as it won't has its transparency Smile 
Bye
Wojtek from Poland

~~~Everytime I hear sound of demoulding part I have eargasm~~~
Fasta
Fasta
Supreme Being (4K reputation)Supreme Being (4K reputation)Supreme Being (4K reputation)Supreme Being (4K reputation)Supreme Being (4K reputation)Supreme Being (4K reputation)Supreme Being (4K reputation)Supreme Being (4K reputation)Supreme Being (4K reputation)
Group: Forum Members
Posts: 468, Visits: 3.5K
I have also just done a similar flat dash panel on glass door.

This was waxed glass with sprayed clear gel coat, wet layup epoxy and this come out great.

For something so simple the wet layup is far easier and you get more of a 3D look weave as the fibres are not vac pressed against the mould.




GO

Merge Selected

Merge into selected topic...



Merge into merge target...



Merge into a specific topic ID...




Similar Topics

Reading This Topic

Explore
Messages
Mentions
Search