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Re: Q: Help needed for material choice: scratching rotary 20B
I bet the petroleum industry loves that monster! Seriously, just get the assortment packs: 9002 and 9008. Most hobby shops stock them. There will be enough to build up any thickness. In direct answer to your question the housings should be 3mm, the irons 2.8mm in 1/24th. Thats based on measurements from my 13B in the garage.
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