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Low cost weigh scales are the best for accurate proportions of epoxy as the specific gravities of the two components are very close. Using a .1g accurate scale (max 1kg) for small amounts of 4/1 epoxy and I can reliably make 5 grams of epoxy. I have another set of scales that does 5kg max. The 1gram scales cost $ 15 and the 5gk $ 25. Well worth the investment for easy and accurate mixing.