What is Reddit's opinion of Drilax Diamond Drill Bit Set 30 pcs 1mm 2mm 3mm Diamond Drill Bits 10 Pcs Each Mixed Sizes Burr Kit Jewelry Beach Sea Glass Shells Gem Stones Lapidary Compatible with Dremel 30 pcs. 1 2 3 mm (1/8")?

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drilled out a few screws in motherboards and graphics cards with a set like this but you have to have a steady hand

http://www.amazon.com/Diamond-Cylindrical-Jewelry-Gemstones-Lapidary/dp/B00CNXFUBG/ref=sr_1_1?ie=UTF8&qid=1445265770&sr=8-1&keywords=diamond+dremel+bits I have a set along these lines that I picked up from a hardware store. They're made with tons of tiny little industrial diamond pieces and work wonders for clean grinding on model kits and other projects

Back when I used the hobby knife, i'd clean it up with a sanding stick like these http://amzn.com/B00G13A7F8 from the hobby store