Looks like a beautiful rocket, good luck with removing that hex key.
Curious, how are those fins attached? Bolted from the backside? That
looks very clean.
Joe
On Thu, Mar 26, 2020 at 8:35 AM William Claybaugh <wclaybaugh2@xxxxxxxxx>
wrote:
All:
Thanks for the many suggestions. And special thanks to David and Troy for
suggestions that appear to be doing the job w/o risking damaging the
vehicle.
Attached is an image of the fix that appears to be working: I drilled a
correct sized hole in the bottom of a small plastic cup, sanded the bottom
of that cup to conform w/ the tube diameter, and, bonded cup to tube with
RTV keeping the area around the stuck hex key exposed. Supersaturated
Aluminum Sulfate solution is now slowly eating away at the tool steel; once
the diameter of same shrinks enough, it should (says here) just fall out.
Bill
On Tue, Mar 24, 2020 at 6:10 PM William Claybaugh <wclaybaugh2@xxxxxxxxx>
wrote:
Troy:
Probably the next try: I’ll have to sand a tube to fit the curve of the
rocket and then tack it in place.
Bill
On Tue, Mar 24, 2020 at 4:55 PM Troy Prideaux <troy@xxxxxxxxxxxxxxxxxxxxx>
wrote:
Blu tack (or whatever it’s called there) + a plastic tube to act as your
dam?
Troy
*From:* arocket-bounce@xxxxxxxxxxxxx [mailto:
arocket-bounce@xxxxxxxxxxxxx] *On Behalf Of *William Claybaugh
*Sent:* Wednesday, 25 March 2020 9:48 AM
*To:* arocket@xxxxxxxxxxxxx
*Subject:* [AR] Re: Stuck tool
Jake:
Thanks, that’s a trick I’d forgotten although in this case I would be
concerned about damaging the aluminum on the OD of the rocket.
I’m currently soaking the offending bits in Aluminum Sulfate solution
although the clay dam may not work long term as it appears to be soaking up
water from the solution.
Bill
On Tue, Mar 24, 2020 at 4:40 PM Jake Anderson <
dmarc-noreply@xxxxxxxxxxxxx> wrote:
On 24/3/20 12:22 pm, Henry Spencer wrote:
On Mon, 23 Mar 2020, William Claybaugh wrote:
I’m skeptical a slot will work unless very deep and the fastener is
countersunk.
Yeah, a countersunk fastener makes that attack difficult.
Use a cutting disk on the dremel to cut the slot rather than a burr.
For countersunk you can also use a centerpunch on the outside edge of
the screw with a hammer to punch it around. 50% of the time it works
every time.
With a small burr and considerable care (or an improvised guide --
clamp a flat surface nearby as a fence for the Dremel to slide
against?), not to mention considerable patience, you can cut a
sloppy-but-usable slot freehand.
For that matter, with a Dremel and a supply of diamond burrs, you can
get just about any not-too-deep broken bit out a piece at a time...
eventually...
Grinding on the hex bit is a good idea, I just need to dislodge it
and a hex driver will handle the rest.
Yes, if you can dislodge it -- grind it, hammer it, maybe put a drop
of LN2 on it to make it contract -- that's undoubtedly the quickest
thing.
Henry