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Model Rocket Building Blog
Centering Rings - DIY! Part 1I need some "non-standard" centering rings for an upcoming build. A series of three interchangeable engine mounts will be made for a Semroc Centurion. I don't use BT-20 tubes for 18mm engines, they are too thin and weak. ST-7 tubes will be used. No BT-50 tubes for the 24mm mount, again too thin. I ...[Read More]
Centering Rings - DIY! Part 2Here's an email tip from Brian Coyle with a better way to center the interior tube circle: Here's a tip to help align multiple circles when using tubes like you're doing on the blog (instead of a compass). Draw cross hairs on the CR material. Use a 4 fin wrap to mark the tube Align the tube ...[Read More]
Centering Rings - DIY! Part 3I always cut more than I'll need and use the best, finished pieces. It's easier to stack the rings on the tube and sand them at once for a consistent size. The ring edges were a little fuzzy. These mounts will also be removable. I decided to harden up the edges with some medium CA glue. ...[Read More]
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