I usually print my centering rings on 110# card (Georgia Pacific - available at Wallyworld) and then glue them to light cardboard or mat board. I have yet to get a circle cutter to work with the accuracy of a printed ring cut with an XActo.
On the other hand, two layers of poster board glued together should work as well. Just remember to rotate one layer by 90 degrees to minimize warping/curling (poster board, like other papers, has a "grain" to it - if both layers are the same direction, the paper will want to warp in along the grain lines).
I did wonder if I should be looking at scrapbooking supplies...guess a trip into town is warranted. was thinking uncut sheets for when I run into odd size tubes, such is the case with the Estes Mercury redstone (which doesn't match anything else that I can find). it troubles me that they have a rocket w/ a pad weight of over 4 oz, lifting on a C6-3. a C11 or a D12 sounds like a better choice. thanks for the info.
Rex
I usually print my centering rings on 110# card (Georgia Pacific - available at Wallyworld) and then glue them to light cardboard or mat board...
C6-3 is a great motor for the Redstone, I haven't flown it in a lot of wind but it flies very comfortably when set up stock. My next one might get a 24mm mount for fun though.
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