What I did today -instead- of Rocketry.

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Greg Furtman

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I had a nozzle break inside the hot end of a 3 D printer when I was attempting to replace it. Thought I was screwed until I remembered I had a set of these. Little one worked like a champ. Barely ever need these, but boy when you do they are invaluable.

View attachment 474557
Sometimes there is really only one tool to do something specific. I have a set of these but I can't remember the last time I needed to use one.
 

mbeels

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Barely ever need these, but boy when you do they are invaluable.
What are those, and how do you use them? Looks like each tapered bit is matched with a regular twist bit. Is it for enlarging a hole to the next size, while maintaining concentricity?
 

Cl(VII)

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What are those, and how do you use them? Looks like each tapered bit is matched with a regular twist bit. Is it for enlarging a hole to the next size, while maintaining concentricity?
Screw Extractor

Matched set of left hand drill bits and left hand spiral bits for removing stripped or broken threaded things (bolts, screws, 3D printer nozzles, etc). 1) Drill a hole in stuck thing with appropriate drill bit (use drill on "reverse"). 2) Use corresponding left hand spiral bit to dig into that pilot hole, and upon doing so start to spin the offending do-dad free. For the nozzle I didn't need to drill a pilot hole as it already had a hole down the center. Just used the appropriate left hand spiral bit to dig into that hole, and break it free.

I've probably used this set 3 times in 5 years or so, but it turned hours and headaches into minutes each time.
 
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Cape Byron

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Well, it started off rocketry related...

Mowing the Cape Byron Proving Ground back two acres when this happened...

Replacement parts are a few weeks away. :mad:

DSCF8911 (FILEminimizer).JPG


DSCF8910 (FILEminimizer).JPG
 

Greg Furtman

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Those are some lovely fracture surface features. I'm sure they would be very interesting to a university materials class. But that probably wasn't the response you were looking for. :D

I hope you can get your Proving Ground up and running soon.
I too noticed the fracture surface. I wonder if it was metal fatigue.
 

Cape Byron

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It was a big rock, now little rocks. ;)
No, still a big rock.

Farm equipment hits rocks, it's pretty standard in that work environment. Weird that there is no large side impact evidence on the blade or the blade stay itself.

Yikes! Bet that made a heck of a sound when it let go.
There well a pretty loud bang when that piece hit the inside of the cutting skirt. Still pretty quiet compared to the noises I made... 🤬
 

teepot

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Yesterday I got stuck in a major traffic jam in Vegas on I15. It took me a hour to go a mile. Seems there was on overnight police shooting. There was a chase that ended when the lady they were chasing rammed a police car and knocked the trooper thru his windshield. The cops opened fire. The lady didn't survive the experience. So 5 lanes of traffic were routed off the freeway into one lane. I got off finally and started heading west. I had to go 4 miles before I found a road that wasn't clogged. So in the end it took two hours to go 10 miles. And I didn't get where I was going in time. Monday I filled up the Explorer with gas. Yesterday I had to fill up again. $46 for that trip. 91 octane gas is $4.43 here.
 

hobie1dog

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got the phone number of a new stereo guy whose YouTube videos I've been watching, so I called him and we spent an hour-and-a-half having a great conversation about stereo gear
 

OverTheTop

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Been getting cables for GSE ready over the past few days. Terminating coax connectors, video cables etc.

Today's effort completed a 240Vac power inverter. 1500W should be enough. I had to add some 6AWG wires and an Anderson plug to plug into the accessory battery system on the Jeep. Had to use the hydraulic crimper to put the terminals and ferrules on the leads.
Inverter.jpg
 
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