How to do a composite lay-up: Part 2

[davetileguy]

Vacuum  bag? $300 box?

[NartOmat]

fuck, that looks bad!

[fmueller87]

worst job i've ever seen! :D

[nickdr350]

next make a carbon fibre burger

[robbielosee]

I still don't know what it is for, but I enjoyed the video anyhow.

[serifovicrules]

I wasted 15 minutes of my life for you to make a box?! Gosh, I could of been on wikipedia and then writing up my assignment. FFS!

[velocity550]

Where are your gloves using the Acetone? That goes right through your skin! Where are you masks while cutting the carbon? This stuff is worse than asbestos when inhaled! Nice work but a little more attention to safety is in order.

[leonelkk]

fat man fuck you

[lovenamese]

Were can I get a team of kids to do my bidding?

[xxsaranglubxx]

Again with the improper application of carbon fiber...You don't want to run a squeegee across the carbon fiber fabric when applying the epoxy resin...It distorts the carbon fiber weave pattern...That is why people use brushes or rollers when applying the resin...also because you don't want too much resin...The strength of a carbon fiber composite is determined by how much resin there is...Too much resin and the part won't be as strong as you want it to.

[datzfast]

@xxsaranglubxx what was the measurable difference in strength between squeegee and brush roller applications? and where may i find this data set?

i am more than just curious.

[xxsaranglubxx]

@datzfast The strength of the part is basically determined by the direction of the carbon fibers. There are tensile stresses and compressive stresses on a part so carbon fabric is layed in a way that the fibers are oriented parallel to the direction of the force so that the fibers can counter the forces being applied to it after a part has cured. By using a squeegee/brush the weave can be distorted making a weak spot. Rollers squeezes the epoxy while mantaining the weave configuration.

[datzfast]

@xxsaranglubxx just as i suspected no one has the answer, its weaker this is whiy and no we dont know how much weaker. lovely.

[xxsaranglubxx]

@datzfast Think of it in terms of a truss...If you went ahead and bent one of the members then the structure has become weaker...The place where the truss was bent is the weak point where the truss is likely to fail...Your more than welcome to make test pieces and do the tensile testing yourself...but you won't find spread sheets out there that tell you this...There are a lot of factors that go into making composites(Material Science) which includes the raw materials and the curing process.

[bochokzack]

yeah This video was not that instructive, you guys also were to busy doing thumbs up.

[FOGHATfan4life]

so thats how they make hockey sticks

[felipeg1917]

who would leave thier kids with this guy super creepy

[SKIFFSHOP]

what an idiot.

[bitsurfer0101]

How much is carbon fiber per yard or ft2?

[yellowajah]

your thumbs should meet a hacksaw :)

[dinesadam]

if you want to know how to do this dont watch this video

[kickthedonky]

that guy is soo stupid! i was hoping that te box would go wrong

[porpoisefathom]

thats an expensive box!

[puffy1963]

The mentors of Spaceship 1 showed the kids what to do.

[Rabbit01vw]

The part looks nice, Did you bag it? Please you didn't use polyester resin?

For Evolvevolvo The heat coeffient between graphite and fiberglass is two far apart. Fiberglass drinks two much heat which causes the face ply to over heat and boil especially under negative pressure. I would use a LTM graphite material, cure it at 200 degrees and post cure at 300 degrees. Use a VTM material to make your part, under positive pressure(autoclave)

Its a nice part, but there are ways to make it better

[elritchie]

ltm materials we use (12/211) cure at 56 deg C. post cure anywhere upto 215 degC

[EvolveVolvo]

why in the work use cabron fiber for molds. you should have made a mold using fiberglass, then made a final product using carbon fiber with vacuum infusion for much better results.

oh well, great work.

[puffy1963]

The box is made for the controllers for the robot. The battery cover was made last night. Thanks for the comment and thanks for watching.

[Bomberofdoom]

At first, I was like, "What are they trying to do???"

After seeing the results, it seems like a great idea! (meant for the battaries, right?)

Thanks for the vid.