
27-09-2010, 01:05 PM
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Member
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Join Date: Jan 2009
Location: East Hampshire
Posts: 349
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Quote:
Originally Posted by bbamboo
Hi John
If it’s done correctly it won’t damage the varnish
But the secret is applying enough heat to take the bend out without blistering the finish.
Steam is not the best way to do it as it adds moisture at the same time what you need is dry heat the best from a spirit lamp.
Hold the rod depending on the size of the flame a few inches above the heat and continuously turn the rod applying the heat as you go to the area.
The right amount of heat is just sufficient so you cannot hold the section to your lips. So you need to keep testing it. Once you get the rod to that temperature counter bend the rod slightly and hold it for a few minutes.
Let the rod cool down and sight down the shaft.
If all is well its job done if not you may have to go thought it all again.
It’s easy for someone who knows what there doing but not so for a guy who as never done this type of thing before.
Its up to you
Gary
Nicho Bamboo Rod Co
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I always recommend steam rather than dry heat, having scorched a few canes in the past. With a steaming kettle you can't generate more than about 110 degrees C no matter how long you apply it for, which makes softening the natural resins a lot easier. Moisture is only a problem if the varnish is iffy, but I always give the affected section(s) a good thick coat before straightening. It might not look pretty, but it means I can assess the soundness of the cane without spending a lot of time and effort on a noodle. If it passes muster I then strip it down before re-finishing properly.
I've got a shedful of cane rods I've bought for next to nothing, owing to severe sets putting off all other potential purchasers, and every one is now as straight as a cane rod will ever be.
What concerns me most about this particular tale of woe is the manner in which the bend occurred. A set usually develops over time, from repeated deflection in a particular plane. The sudden shock inflicted by the bicycle spokes may have over-stressed one or more of the cane segments beyond its elastic limits, in which case no matter how often you re-set it it will revert to bent as soon as it's flexed in that direction. A quick coat of varnish, an application of steam to straighten it out and a casting session on the lawn will soon show whether this is the case. If it is, the only real solution is a new section - which is where Gary comes in!
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