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Drilling Carbon Fiber?
Posted by: ricknriver on Jul-13-13 7:43 AM (EST) Category: Kayaks
Want to add some deck rigging to an '04 carbon fiber Easy Rider Dolphin. Any cautions/techniques best to prevent cracks/chips? Thanks, Rick
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- Drilling Carbon Fiber? - ricknriver - Jul-13-13 7:43 AM
Posted by: rjd9999 on Jul-13-13 10:14 AM (EST)
I don't like putting extra holes in a hull and carbon fiber presents additional challenges as the cloth can snag and separate. One statement I can quote is as follows:
"For the best results for drilling holes in to fibre glass or carbon fibre use a diamond coated drill bit these are much sharper and stay sharper which means they cut the fibres easily without dragging them."
I assume the newer the bit, the cleaner it will be going through the hull.
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You should get clean holes in |
Posted by: g2d on Jul-13-13 1:31 PM (EST)
carbon or glass laminate with just ordinary, new, sharp high speed bits. Drill speed slow to moderate.
Don't worry about delamination. Though stiff, glass and carbon fibers will shear off easily. The resin will hold the rest together. And I wouldn't do anything special about the holes, once they've been drilled. You don't need to paint the edges with anything.
If you were drilling glass/Kevlar, a little bit more attention might be needed, because Kevlar fibers are very tough, and if your drilling were to get ham-handed, those tough fibers might pull loose of the resin near the hole. But even then, it wouldn't amount to anything. Kaz of Millbrook builds S-glass/Kevlar boats, drills them to lace float bags, and everything holds up just fine.
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1000's of holes drilled ZERO problems|
Posted by: onnopaddle on Jul-14-13 12:36 AM (EST)
put the bit where you want the hole, don't let it slip and pull the trigger. Its done. No need to think after that.
Now if dealing with globbed on gelcoat or even if you not sure ... REVERSE the bit through the gelcoat, when color change, forward bit as above ... done.
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Thanks all |
Posted by: ricknriver on Jul-21-13 7:56 AM (EST)
Great tips. Not worrying as much now. R
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use a backer .......|
Posted by: pilotwingz on Jul-21-13 5:31 PM (EST)
...... on the underside to secure fastners through .
Hardwood block larger than the footprint of the thing your attaching . This spreads the load that gets applied to the attachment ... called a backer .
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