Hi John, I am working on 1/700 Hobby Market's Hellenic Navy full hull kits. Photo etched cutter works on most parts, but the propellers (and some other parts) are quite delicate, and the kits are expensive. I think that the Ultrasonic cutter is worth it.
Big difference in cutting away a 1/700 piece and 1/350-1/200 piece. In 1/700 some manufacturers attached printing sprues to some of the most delicate detail for support. In the process of cutting you sometimes lose the delicate detail..
Sometime ago, I asked for good method to detach 3-D printed parts without damaging them and got good tip of using photo-etched cutter. I tried and it worked. I recently heard of using ultrasonic cutter. I ordered mine from Micro-Mark and just tried. It is quite expensive, but it works great. It is highly recommended.
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