Carbon Building

[meech151]

Thanks for the input guys.

[crumpton]

I would love to see the oven. Great thread, thanks!

i'll get you pics of my ugly ebay special on the next go around but it is a model 333 grieve with a PID. this pic is from their website.

specs http://www.grievecorp.com/catalog/Ba...ench-Oven.html

[meech151]

Hey Nick, I know you have built steel frames as well as carbon, possibly others as well, and I was just curious if one style is easier to align correctly than the other.
Typically, if a carbon frame is bonded or tacked in alignment in the jig, will it come out of the jig in the same alignment or can it spring in one direction or the other like frames
made of metals? I didn't know if curing epoxy can pull the tubes out of place.

[crumpton]

Hey Nick, I know you have built steel frames as well as carbon, possibly others as well, and I was just curious if one style is easier to align correctly than the other.
Typically, if a carbon frame is bonded or tacked in alignment in the jig, will it come out of the jig in the same alignment or can it spring in one direction or the other like frames
made of metals? I didn't know if curing epoxy can pull the tubes out of place.

pretty well addressed in the thread. don't bond under tension but everything relaxed. then be mindful of what goes on under vacuum and heat. right?

[Mike Mcdermid]

I still like the finish on those tubes

[edoz]

Just out of curiosity Nick, do carbon tubes respond well to hand miters? Would half round files tear them up too bad, and is there any other way to miter carbon tubes by hand? Have you done it on a mill since the beginning?

[progetto]

I'm not Nick but using hand tools on carbon isn't a problem, you do have to a little bit careful when cutting or filing not to be too agressive so you don't delaminate layers of carbon as it is a multi- layered structure.Fine tooth hacksaw blades for cutting, steady speed and pressure.I find course files to be the best as fine just seem to clog too easily. When drilling holes, try and support internally as internal layers delaminate easily, I will quite often use a fine rotary carbide bit for drilling holes, less chance of tube damage. When mitering whether machine or by hand, make sure tube is well supported as any clamping forces will damage tubing, carbon doesn't like to be sqaushed. Always wear appropriate safety gear, mask,long sleeve shirt, gloves (don't wipe sweat from your eyes with your shirt sleeve), all those fine fibers are prickly and will make you itch like shit for days, also be very careful with solvents and epoxy glues, that shit does have an accumulative affect on your general health.
Bill

[crumpton]

Just out of curiosity Nick, do carbon tubes respond well to hand miters? Would half round files tear them up too bad, and is there any other way to miter carbon tubes by hand? Have you done it on a mill since the beginning?

compared to metal? no, they do not respond well. at least not high quality IM carbon tubes of any reasonable wall. its a total PITA to hand miter a carbon tube with a file. and would take 3x time IMO. if you wanna miter on the cheap, tape on a miter.exe template and take it to the 4x48 belt sander. expect a mountain of very irritating dust if you choose to do this.

[Lionel]

I just discovered this gem!

Too bad some of the pics are gone.

[PJN]

I wish this still had photos.

[Dancingbear]

I wish this still had photos.

I bet if Nick were asked nicely, he may re-post the photos. He's one of the good ones......... And it was one of the most informative threads on carbon tube-to-tube construction I have had the opportunity to read.

[devlin]

It looks like he has stripped a bit out of his Flikr account. There are still some good photos that show his process in a broad picture.

[Kristóf Kolonics]

It would be really nice if Mr. Crumpton could reupload the pictures. Its really one of the most valuable "knowledge" post so far.
I think most of us would appreciate it.

[BShow]

It would be really nice if Mr. Crumpton could reupload the pictures. Its really one of the most valuable "knowledge" post so far.
I think most of us would appreciate it.

This is an example of where it would be awesome to have the pics saved on vsalon. hosting externally has its benefits, but it stinks to have such awesome threads show up without the pics. It'd be a pain in the ass to match up pics with the posts here... it'd probably be easier to make a new thread with new pics.

[Dancingbear]

It would be really nice if Mr. Crumpton could reupload the pictures. Its really one of the most valuable "knowledge" post so far.
I think most of us would appreciate it.

I PM'd Nick and let him know there was renewed interest. If he has time he'll respond.