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- Mark 42 commented on sphsengineering's instructable How to Make a "Bulletproof" Polycarbonate Longboard!
- Mark 42 commented on RaketfuedRockets's instructable Let's Build a Water Rocket That Can Fly 1000 Feet High!
- Mark 42 commented on PoppaFixIt's instructable Speed Upgrade on the New Grave Digger Power Wheels Ride-on Toy
- Mark 42 commented on TrollFaceTheMan's instructable Amazing, Cheap & Easy, Cracked Gems & Marbles. for Fantasy & Crafts.
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