My only dig is the BT-20 guide slips on a BT-20 tube. I have to use tape to give it something to grab. Other than this these are a must have for the tool box. Now only if Estes can make a set for the larger BT-70 and BT-80 tubes to fill out the set. ESTES NOTE: Instructions state you may need to use tape. (Posted on 3/1/13)
The unique two-piece design locks the tube cutting guide in place exactly where you want it. Be sure that you use a sharp hobby blade to cut the tube cleanly and evenly. A great item for your tool box! (Posted on 11/19/12)
Purchased the tube cutting guides from a local vendor. Cutting the tubes was a tedious task until I purchased this set of cutting guides. Now cutting the tubes are quick and the cut is smooth and accurate each time.
David (Posted on 10/13/12)
The biggest mistake we rocket builders can make is to try to cut through the body tube too quickly. You need a sharp razor cutter or hobby knife and you need to make several light passes on the same perfect track in order to get that professional-looking cut. These guides will steady those multiple passes, keep the blade in the right track and help to avoid any mistakes. If you are going to repair and replace your body tubes or going to build your own design, these guides will be worth the money to get it right. (Posted on 6/19/12)
I decided to take the plunge and purchase some of the various guides stocked by Estes. The tube guides are great and I've been using them to accurately mark my tubes and as a guide for cutting. A great investment! Now I just need one to fit a 4" tube. (Posted on 4/12/12)