I have been thinking that I could use the acetate molds I've made to create the core as the spool spindle. The sanding thing sounds like a whole lot of work I can do without. Once again you've come up with some great ideas. Keep thinking and sharing.
I tried again with the Fe3O4 coil. This time I made the shaft 1.5" inside and 1.75" outside with the ends 2.5". The wire used is 23 gauge for the run 24 gauge for the trigger. This trigger wire is about 2.5 times larger than the usual trigger wire used. The spool is wrapped bifilar 550 turns. It is a screamer! So I made a second with the same dimensions and it also is a screamer! I'm tickled with the results.
I have just finished reading through this Topic for tonights education, and must say your efforts and persistance Poppy are amazing congradulations on your results. I must also commend the rest of you for your valuable input in assisting Poppy - Truely demonstrated Teamwork. I know when i finally get started im not going to have any problems - How can I possibly fail hanging around with you guys.