Is it possible to straighten a graphite blank by applying heat from a hot air heat gun to a curved section and bend it straight at the same time?... Bob.

Not really. Once the resin in the prepeg has been initially heated (cooked) and cured, it's not something that will reflow or rework with additional heat down the road. In other words - it's not going to act like a hot melt glue type product.

What would likely happen, in fact what will happen, is that once you apply enough heat to soften the blank it will be ruined.

You can try putting the blank against the wall opposing the bend and hoping it will set the opposite direction over time, but I suspect you'll have very poor results.

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Hi Robert,
Yes I go with Tom on this one. It is very unliely that you will straighten a carbon blank by leaning it against a wall. Old E glass rods would sometimes take a set if you did this. I have had ten year old carbon blanks that I could push a bend into and it would stay there and then reverse it. What I think had happened here was that over time and a great deal of flexing the fibres had fatigued or even broken the individual fibre strands ( some of them at any rate) and allowed this set to happen.
Hope this helps. Is the curve very bad.

Regards
mike O.

Thanks for the great information. If the curve was really bad I would send the section back for a replacement. I know that just the right amount of heat can straighten or warp many materials but I have never applied the method to graphite.. Thanks Bob.