Open Source Ecology - metal-fabrication

@Alexa still in the store but here is a Carbon Arc Gouging torch

9:27 PM

:o

9:27 PM

Oh wow look at that!

This one has the holes directly under the rod but I think it could be on the handle

That makes sense - It's a lot better now that I can see a working example. Very cool!

Here is how it attaches

9:31 PM

gotcha - just threads together real nice

More stuff on a OSHW Carbon Arc Gauger

8:08 PM

Normal stinger handles slip over the cable first and are attached by a single screw to the hinge mechanism

8:14 PM

This example measures 6.153 inches (156.28mm) in OAL and 4.526 inches (114.96mm) from the start of the hinge section to the base

8:14 PM

8:15 PM

An up close example from the hinge cut out to the base

8:15 PM

8:18 PM

The OD on the ridge was measured at 1.073 inches (27.25mm) and the ID was found to be 0.825 inches (20.95mm)

8:18 PM

8:21 PM

From the handle mounting hole to the bottom of the handle was 5.694 inches (144.62mm)

8:28 PM

The width of the lever section appears to be .758 inches(19.25mm)

8:29 PM

8:31 PM

8:32 PM

The length of the lever section appears to be 1.65 inches (41.91mm)

8:34 PM

I estimate the radius at the bottom to be between .325-.5 inches (8.25-12.7mm)

https://www.smooth-on.com/applications/ information on various casting processes and techniques

Learn About Mold Making and Casting for a Specific Application

Alexa

https://www.smooth-on.com/applications/ information on various casting processes and techniques

I need something for pipe insulation in a crawlspace

There are two things you need to buy

4:40 PM

1) pipe insulation foam

4:40 PM

2) a pipe hearing wire setup

4:41 PM

https://www.lowes.com/pd/EasyHeat-AHB-6-ft-42-Watt-Pipe-Heat-Cable/1069433

4:41 PM

Heating wire* lol

I'm trying to avoid foam and active heating elements

…. Welp

303adastra

I need something for pipe insulation in a crawlspace

https://www.soundaway.com/R13-16-UltraTouch-Denim-Insulation-p/22301.htm

UltraTouch Denim Insulation 8-Pack - 3.5'' x 16.25'' x 94''

At SoundAway, we sell the 8 batts per bag of UltraTouch 3.5' x 16.25' x 94' denim insulation for walls and ceilings. Buy online to enjoy our competitive prices & fast shipping on all orders.

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5:11 PM

How about last years denim? Lol

5:12 PM

I do know grom experience this stuff loves to hold water if you get it wet

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@HopefulMGowner in regards to producing stock sheets at various thicknesses, what about large sheet molds? Could you cast a 4’x8’ mold for sheet metal?

Alexa

@HopefulMGowner in regards to producing stock sheets at various thicknesses, what about large sheet molds? Could you cast a 4’x8’ mold for sheet metal?

How think?

Thick*

Anywhere from sheet to plate would be fine I guess. Just somewhere to start

https://youtu.be/e7f9H9_5Wp0

Shake the Future

How to Make Your Own Crucibles (for microwave metal melting)

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303adastra

https://youtu.be/e7f9H9_5Wp0

amazing and, this is some peak microwave oven use!

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polly (she/her)

amazing and, this is some peak microwave oven use!

Indeed. Looking forward to making use of a donated microwave oven that's just been collecting dust

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huh.... did not think such a thing was possible... (edited)

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goldfishlaser#1337

huh.... did not think such a thing was possible... (edited)

Ikr? Never thought I'd be shopping for silicon carbide and sodium silicate in 2025...

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https://youtu.be/q8bDgRCyWCI

Shake the Future

Melting Iron in a Microwave to Cast a Grinder Blade!

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303adastra

https://youtu.be/q8bDgRCyWCI

this was fun :)

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ooh! lol this reminds me that michael was considering designing an open source industrial food processor...i don't think he has a repo on eco libre about it just yet tho... anyways this would be a neat way to go about that... (edited)

goldfishlaser#1337

ooh! lol this reminds me that michael was considering designing an open source industrial food processor...i don't think he has a repo on eco libre about it just yet tho... anyways this would be a neat way to go about that... (edited)

Nice! I've also had tentative ideas of using such process for producing a mulcher/wood chipper or plastic shredder for use in 3D printer filament extruding. So many possibilities...

Super cool stuff!

Would conversion projects fit here you think? I've got two in mind a printable carbon arc gouging set up and a gas conversion setup for a cheap fluxcore welder

HopefulMGowner

Would conversion projects fit here you think? I've got two in mind a printable carbon arc gouging set up and a gas conversion setup for a cheap fluxcore welder

I suppose. What are you thinking of using them for?

303adastra

I suppose. What are you thinking of using them for?

CAG is basicly a precision weld/metal eraser used in repairs (like if the old part is worn out or rusted) and the gas conversion is just to make a dirt cheap MIG machine

I have now seen a 3,000 dollar MIG spool gun up close

6:26 PM

It looks like it would cost 50-150 dollars to build

6:31 PM

A spool gun is basicly a trigger activated printing extruder capable of extruding at 700-1000 IPM (316-425 mmps)

Add another thing to the idea pile A vibratory stress relieving machine It has an variable AC motor and produced a vibration between 10 and 220 hz with 17 newtons of force where it sits firmly connected to a weldment and tests its harmonic frequency till it hits its resonance frequency and continues hitting it to relieve stress from welding or machining

HopefulMGowner

Add another thing to the idea pile A vibratory stress relieving machine It has an variable AC motor and produced a vibration between 10 and 220 hz with 17 newtons of force where it sits firmly connected to a weldment and tests its harmonic frequency till it hits its resonance frequency and continues hitting it to relieve stress from welding or machining

Do you mean a peener?

No

3:48 AM

I don't think so

Ok. I have worked on a design weld cell that had a peener on a Fanuc robot arm... The weld was multiple passes of 3/8" weld

Did it vibrate the part at its resonce frequency?

3:53 AM

If so it might be

No it was stress relief

OK sounds like it is a peener

They had zero feedback to the peener... It was a "smack it till the job is done" design

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3:55 AM

I.e. tribal knowledge...

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That's not great

Fair, but it worked for them.

True

https://www.tiktok.com/@i1883381jql/video/7479305480876133663 https://www.tiktok.com/@diy.bbbb/video/7486728506639109422

I got a junky stick welder box from work. It seems decent so i MIGHT mess around with that sometime (Granted welding leads not included and those are pricey on their own

) (Also no flash curtain or fume extraction/ppe included either (although i already got a hood + jacket main thing is LUNGS ))

9:28 PM

This is less likely as again i’m not in the best area for experimentation but i could try and use it as a luxury version of that mini arc furnace “The King of Random” made way back.

I don’t know if you have seen these yet, but Pantograph Mills ! https://youtu.be/pku2VRADLGk?si=8d-2rc5Q53U0z1nv https://youtu.be/SlCJ6hp1xZY?si=2ZkVGEjLpuFj1Ok0

Adam Savage’s Tested

Pantograph Mill: The Coolest Machine Adam Savage Owns!

Attoparsec

The waffle and the pantograph

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2

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alrighty, lets pump some maker content here, I spare you with all the sustainable os yada yada ... another iteration, cyberpunk meets steampunk, design as usual for download, https://files.polymech.io/files/machines/injection/katbot-pro-xl/

9:36 PM

wont save the world

Is this an injection molding machine? Neat