Hi,

I have decided to fit some upgraded ACES ejection seats into my Revell F-22 Raptor, but the come on a big block of resin which clearly is not part of the seat. Its convenient as a holding popint for painting, but when it comes to fitting, what is a good clean way of removing it?

--dave

Depending upon the size of the casting block and the fragility of the part, I do one of two things:
1. Score either side of the block several times and simply snap it off.
2. Use the rotary saw attachment on the Dremel. Outside of course.

I then wet sand the surface flat with 240 (or finer) wet/dry sandpaper on a piece of granite.

When sanding, use water. It'll sand smoother and keeps the resulting resin dust from getting airborne.

Sidecutters are also handy for cutting off excess pour blocks, but don't go too near the part itself (depending on the robustness of the component), as the cutters might shatter the resin.
A small jeweler's saw can also be useful, as well as hobby knife saw blades.

Razor saw blades are available for Xacto type knives, for larges blocks buy a proper razor saw, I have a couple including this one from UMM which I recommend highly. To avoid resin dust I constantly dip it in a jar of water.The dust clumps on the blade and fall away when redipped. I would be very careful of the score and snap method some resins are more brittle than others.

I had already eliminated the snapping off method since the block of resin is a good 5 sqmm, but I didn't have a dremel attachment for that as 18bravo recommended.

I think that the razor saw is the way forward, but your link was in the US, would this one do?

--dave

I'm sure that would work too Dave, I just prefer the UMM one out of the $ razor saws I have.