Very nice. I have never done this, but have always wanted to learn. Thanks for the inspiration.
Very nice. I have never done this, but have always wanted to learn. Thanks for the inspiration.
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Chuck Haislip
NAR/Tripoli Level 3
Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
Level 3 - 10 inch Nike Smoke
Ns for Year: 0 but back in the USA. Builds starting today!!!!
My rockets usually fly naked. If they survive, they earn their paint.
Come fly with ROSCO or ICBM in Orangeburg SC => http://rocketrysouthcarolina.com
I'm pretty happy with the shape. It may not be perfect, but I think it'll look good regardless. Haven't decided what to do about the tip yet. The original X-Ray nose cone had a sharp tip. With the live center I'm using, I can't get the tip sharp, or even slightly rounded. I'll have to pull the live center back to finish the tip. When I do that, it's been my experience that the piece will wobble. So I won't be able to use a chisel, it'll be sandpaper only. It would be relatively easy to round the tip. But if I sharpen it, it's going to reduce the length of the nose cone. It's already shorter than scale, and if I sharpen it it'll be even shorter.
I'm toying with the idea of drilling a big hole in the tip, and gluing in a piece of balsa dowel. That will allow me to form a sharp tip without shortening it. I also need to remove the nose cone from the face plate to check the shoulder fit in the clear tubing.
NAR 91107, Level 2
I think paint and I have an uneasy truce going.
Plays with wood, cardboard, and carpenters glue at home.
L1 will have to wait until 2013. Oh well.......patience is a lost virtue any-ways...
This mock drawing may help you in a future turning. My rule of thumb is to have at least 3" longer length of wood than I need. 4" is ideal. When I take down the wood at the tip, I carve beyond the tip leaving about 1/2" of wood 1/4" thick (or there about) allowing me to cut the cone loose from it's ends and shape the tip to a point. You actually have more wood left to make the desired tip you are looking for.
Who dat sayin, "Who dat", when I say, "Who dat?"
"I'm a sandman. I've never killed anyone. I terminate runners when their time is up." Logan from "Logan's Run"
http://excelsiorrocketry.com/
I had a 1-1/2" square balsa stick, so I decided to turn a dowel from it. I cut off a 2-1/2" long piece and attached it to a screw chuck. I flooded the hole with CA do the screw in the chuck wouldn't tear out. This balsa is much softer than what I used for the nose cone.
NAR 91107, Level 2
I think paint and I have an uneasy truce going.
It tore more than cut, but I finally got it down to 5/8" diameter.
NAR 91107, Level 2
I think paint and I have an uneasy truce going.
I used a 5/8" Forstner bit to drill the tip of the nose cone.
NAR 91107, Level 2
I think paint and I have an uneasy truce going.
I glued the balsa dowel into the nose cone with wood glue. I'm fairly confident I'll be able to shape the tip sharp with sandpaper without too much trouble. Everything was going along fine. I was happy with the shape and feeling good about my success. But then...
NAR 91107, Level 2
I think paint and I have an uneasy truce going.
I got the shoulder sanded to fit inside the clear tubing. Apparently somewhere along the line, I sanded the diameter of the nose cone too small. Yeah, I muttered a few choice words. I measured it several times with a caliper, not sure where I went wrong. The only thing I can think of at this point is to build up the diameter with putty and sand it smooth. I'm open to suggestions.
NAR 91107, Level 2
I think paint and I have an uneasy truce going.
Texture.
Instead of having a smooth nose cone surface all the way to the clear tube, add a thin strip (ring) of card stock approx. 3/16 or 1/4 in. above the base of the nose cone.
It will break up the transition of the cone to the clear tube. Although the lip from the cone to the clear tube will still be there, the strip (ring) will fool the eye and the lip will appear to 'belong' there.
Adding a strip (rings) below the BT transition and above the fins will enhance this look.
See my Sizzler thread for visual aid.
Last edited by bradycros; 8th July 2012 at 02:13 AM.
The process is continuous...
Gee, that never happens to me...
Much!
I cheat, toss it in my oops box, since it's 3" in diameter I use it to make a BT-80 nose cone or tail cone, grab a new block of wood and start all over.
But that's me.
My last balsa order was a little over $600.00 worth or wood so I have extra.![]()
Last edited by sandman; 8th July 2012 at 02:27 AM.
"I'm a sandman. I've never killed anyone. I terminate runners when their time is up." Logan from "Logan's Run"
http://excelsiorrocketry.com/
Calipers don't always cut it. One might think they should but they aren't all that you can expect them to be. I know this doesn't compute but it's my reality. They are only a close reference. I usually go with slightly larger (than what the calipers say) because it's easier to trim than it is to build up. Balsa is tricky and it's way too easy to sand away too much. If I had a nickle..........................I got the shoulder sanded to fit inside the clear tubing. Apparently somewhere along the line, I sanded the diameter of the nose cone too small. Yeah, I muttered a few choice words. I measured it several times with a caliper, not sure where I went wrong. The only thing I can think of at this point is to build up the diameter with putty and sand it smooth. I'm open to suggestions.
Who dat sayin, "Who dat", when I say, "Who dat?"
The joint is still there, but in this picture you can see how the strip distracts the eye from the joint between the top of the BT and the bottom of the nose cone.
Last edited by bradycros; 8th July 2012 at 04:00 PM.
The process is continuous...
Cool, eh!
The process is continuous...
The process is continuous...
I cut the last balsa block I had in half to use for the transition. I had some trouble clamping the pieces together, they kept sliding apart when I'd tighten a clamp. So I put them in the vise first, then added the clamps. Tha seemed to work.
Sure is purty wood, almost seems a shame to cover it up with paint.
NAR 91107, Level 2
I think paint and I have an uneasy truce going.
Nice work! This makes me want a lathe. I just freehanded a balsa nosecone. Lets hope it flies true. Lol
-Joshua