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I'm interested in what paints you're all using to crest with?
I've used Tamiya, Vallejo and humbrol enamel - the enamel is by far the best.
Tamiya is a nightmare; dries on the brush, goes stringy and doesn't thin very well
Vallejo are good pigments, but I only have matt, so need a coat of gloss over the top.
Humbrol gloss enamel in the little tins is great.
Ok i did it, I knocked a cresting machine up for £10.99 the price of the model boat motor. All other parts were made from scrap wood lying around and a small bit of the kids Lego (thanks for idea Si) and an old (30 years) model railway transformer i had in the loft.
It works a treat and is giving very smooth cresting lines, At the moment i am using marker pens and they give a fantastic if somewhat matt finish.
When the kids go back to school next week i will start with the paints and post some photos on here.
Thanks for the ideas everyone it looks and works great.
Cool Jigs everyone. I love the lego idea! I managed to make a start on my own jig yesterday (with a lot of dodging of thunderstorms). My main challenge was that I needed to make it very cheaply, so the wood is old leftovers and the only thing I bought was the motor (£9.99 from Maplin) and a power jack (about £1 from Maplin). What I was actually aiming for is what I've termed a Flesting Jig. That is, a Cresting Jig combined with a Fletching jig.
The end block on the far left has markings on the side you can't see for fletch positions and the two central V-blocks come apart & have wooden dowels so that they can connect together again in the correct position (you can see one is separated in the photo).
I still have a couple of things that I need to do:
Find a suitable connector to attach the arrow shaft to the motor
Add some padding to the V-blocks
Probably make the end block thinner since the Flecting would be quite far forward as it is
I also think I'm going to make a block with a groove to rest the brush on & transparent frame for laying out my cresting pattern. Oh and maybe a speed controller for the motor, depending on how it goes. It's currently geared to run at about 90rpm.
In all I'm quite happy with how it's turned out, but I'm still waiting for my shafts to arrive before I can do anything with it.