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A heart (uh food?) Warming 3-D Printer Story - my title
imgur ^ | October 2014

Posted on 10/31/2014 7:53:53 AM PDT by null and void

My great grandmother’s stove, which my parents inherited, has been missing two of the gas knobs for years. Nobody sells similar replacements, so my parents had been using generic knobs instead.

That was no good! I took a ton of measurements and booted up Blender, and got a model of them within a few hours. Ordered two from Shapeways, and they got here today.

Nearly indistinguishable from the original! The new one is on the left. This was before we painted them. It took a bit of drilling to fit them on- turns out trying to print EXACTLY the hole size was a dumb idea, since plastic can warp a little and 3D printing isn’t quite as precise as to the thousandth of an inch- but now they work fine.

With paint. Looking good!

The whole thing took $20, a few hours of work, and a few weeks of waiting. My parents are so excited to have the stove complete again, which really means a lot to me.


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To: bert
I love JB Weld........ really useful stuff.

If you want a stronger weld, use baking soda and superglue (cyanoacrylate). Insert the baking soda in the gaps, brushing away any that you don't want converted to plastic. Then flow in some superglue. Have plenty of ventilation, as the chemical conversion will release acidic fumes. Bonds in a second, and the weld won't break down or flex like JB Weld might. For an even stronger bond, heat the baking soda in an oven - it converts the bicarbonate of soda to carbonate of soda and makes for an even stronger plastic. I've fixed many tools and parts in this manner. Best and purest superglue is MXBON 105 which you can buy on the Internet.

21 posted on 10/31/2014 10:10:44 AM PDT by roadcat
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To: HiTech RedNeck

No, it was a Chef’s Delight. A very good stove. Best pies I have ever had came out of it.


22 posted on 10/31/2014 10:36:43 AM PDT by buffaloguy
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To: null and void

Thanks for sharing that.


23 posted on 10/31/2014 10:46:10 AM PDT by thackney (life is fragile, handle with prayer.)
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To: null and void

That is a beautiful stove - and a great hear-warming story.


24 posted on 10/31/2014 10:51:38 AM PDT by reed13k (For evil to triumph it is only necessary for good men to do nothings)
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To: roadcat

Now that is interesting......

It would have gotten us in trouble back in 1959 or so.

Dr Harry Coover of Eastman Chemical co invented super glue back in the late 50’s . it was marketed as Eastman 910 adhesive. His son was actually in my class of 1960. He made the stuff and put it in his spectrometer that was then glued shut and destroyed....... or so the story goes

There was all kinds of strange stuff to promote it. Lots was floating around town.

It was brought to school. Some one glued a string of Coke bottles from one end to the other of the geometry class room. one teacher had decorative plates glued to the black board. A coach that ran study hall had his chair glued to the deck. and on and on.

I can only imagine the mischief that could come from super super glue.

I printed your post for my shop


25 posted on 10/31/2014 12:45:58 PM PDT by bert ((K.E.; N.P.; GOPc.;+12, 73, ..... Obama is public enemy #1)
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To: bert

I’ve successfully used baking soda and superglue to patch broken computer parts, as well as other plastic products such as radios and toys. Push cracked parts together, put a pile of baking soda on the seam on the inside of the device and flow superglue on it, fixed in 5 seconds. I built some custom cabinet doors for my kitchen with it. Mitered some plastic trim (a lot of door and window trim is plastic based now), clamped the trim in a form and used baking soda and superglue to bond the corners. Any excess can be sanded even with the plastic trim. Then paint if wanted. I bonded the surround trim to high-quality plywood panels, and stained all for beautiful cabinet doors. Made for a fast build.

I’ve been using this stuff to finish off 3D items I print with my 3D printer. Smooth it on over gaps and seams, then sand and polish.


26 posted on 10/31/2014 1:18:09 PM PDT by roadcat
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To: roadcat
I’ve been using this stuff to finish off 3D items I print with my 3D printer. Smooth it on over gaps and seams, then sand and polish.
. . . so would you have suggested making a metal part for the handle of the gas stove, then 3-D printing out a shell of plastic, and using your Baking Soda/ Superglue formula to make the two pieces into a single strong, attractive piece?

27 posted on 10/31/2014 4:12:23 PM PDT by conservatism_IS_compassion ("Liberalism” is a conspiracy against the public by wire-service journalism.)
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To: conservatism_IS_compassion

No. Often, simpler is better. The author of the article did good. If strength is a concern, then your suggestion would be a good idea. I’ve had problems with ABS breaking, so I’ve done parts in Nylon for more strength. For a better finish, the Nylon could be sprayed with a tough paint for durability.


28 posted on 10/31/2014 10:04:57 PM PDT by roadcat
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