OG1959
Well-Known Member
- Joined
- Jul 11, 2021
- Messages
- 96
- Reaction score
- 149
Building a Goblin and decided to make a fin jig. I came up with this design in Sketchup which printed relatively quickly. (two hours) It works quite well.
You set the first fin in the part with two sides that hold it, CA glue that in place then us it as a guide for the next fin. Of course I marked four lines on the BT-55 tube before hand.
Once I had all four fins set in place with CA glue, I taped the body and tubes in prep for laying down the fillets. I used some Devcon 5 minute epoxy gel which I first applied with small a wooden dowel then stroked it with a small popsicle stick which had the perfect radius. I like the results! Planning to launch this one this weekend with double streamer recovery on a D motor.
You set the first fin in the part with two sides that hold it, CA glue that in place then us it as a guide for the next fin. Of course I marked four lines on the BT-55 tube before hand.
Once I had all four fins set in place with CA glue, I taped the body and tubes in prep for laying down the fillets. I used some Devcon 5 minute epoxy gel which I first applied with small a wooden dowel then stroked it with a small popsicle stick which had the perfect radius. I like the results! Planning to launch this one this weekend with double streamer recovery on a D motor.