Apologies as I posted this message on Binaries too....
I cut off the end of the shoulder making it 18mm in length. The moon shaped
hole left at flat side is so I can add nose weight later on.....
The inside edge around the shoulder lip was scared in a criss-cross pattern
and then the tube assy was epoxied in.
The plate is just a cap with vent holes to hold the altimeter in . It
doesn't vent thru the shoulder sides but thru the sides of the housing tube,
out thru the end cap and then out thru a larger
payload bay below nose, which the nose assy is screwed into. Nose does not
separate at ejection. Part of a larger payload assy.
This one isn't a deployment NC. Just an altimeter housing. Playing around
testing some ideas for a future project.
I'll have some more pics of the finished rocket soon.
Please Doug......are you trying to swell my boxhead even more??? :-)
No fancy pants tooling here! A mini lathe and drill press are stuff of my
Any skills have been learnt the hard way....I just try to be neat &
God.....If only my mother heard that!!!
The following was used -
A cordless drill & 3mm drill bit.
Long 3mm bolt, 2 washers & a nut.
180 & 240 grit sand paper & cork sanding block.
Trusty old pencil.
A compass and protractor would have been real nice but I couldn't find my
old school kit!!!
Just measured everything instead and traced around Nose / Tubes for
With all my small rockets (Estes/Quest type things) I use 0.8mm ply for
Fins, Bulkheads, C-Rings etc.....
It cuts really easily with a good pair of scissors and for fins, just one
slice from the hobby knife... :-)
I draw up the plan/template and then cut out the main ring etc. with
scissors just slightly
larger than is required (On the outside of the line). If I need a thicker
ring or bulkhead I just cut the required number of plates and glue them
together with wood glue.
Use those paper clip clamp things from your newsagent to hold together, or
squash under 2 sheets of thick glass with books on top.
This Bertha NC uses 1.6mm plates......2 plates glued together...
Drill the 3mm hole in the centre, put the bolt thru with a washer on each
side, put the nut on & tighten up.
Put in the drill chuck & spin her up. Sand to size. Check fit regularly
and take it easy!
For the centre hole, I VERY Slowly cut/traced around it with the hobby
Take your time here also, it can save frustration later on!!! A couple of
passes around, pop out the centre and sand smooth to fit tube / MMT
All other cuts & holes are made, hopefully, on their marks.
There's another 'Almost' finished NC pic on my caveman style website. :-)
Has the moon shaped cap ready to be glued on after adding nose weight....
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