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A very enjoyable kit. Took me (72yo male) 1-2 days to complete, far longer than suggested few hours. I bought two kits so I could have a go first! Good diagrammatic guide for assembly but does need careful thought. I made several mistakes but fortunately before I'd glued anything. Careful sanding or filing needed to obtain easy fit of joints. And some wood of the moving plywood joints broke after slight use, but there were sufficient remaining off-cuts for glueing and repairs. Ideally I'd use longer tubing to make it simpler to use. I felt slight confusion at the odd 'rotation' syringe connection. My grandson, aged 5, joined in assembling it with me and had fun. He understood the principles and enjoyed squirting water and using it to move the arms. He lacked the strength needed to push tubing onto syringes by himself. Overall, superb. A+ The assembled kit works dramatically and well. We look forward to building further such construction kits!!!!!!! Thank you.Read full review
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