Posts tagged with personal

Cry Baby Prosthetics

January 16, 2018

Nelly wanted a cry baby ever since we visited a toy store to get a friend’s birthday present in October. We are not very fond of plastic toys and noisy ones no less. She started brainwashing us on a daily basis. When are we getting one? Can we get one tomorrow? Can we get one for Christmas? How many days more?

Eventually she got one as a Christmas present from Nani. It was very hard to source one, as it turned out this particular doll was highly sought after. She was ecstatic. A couple of weeks later she had dropped it so many times, that the neck cracked. She was inconsolable.

The body is built light and thin like an egg shell. We epoxy-glued it, but it broke again. This called for more drastic measures.

Let’s build a new collar and make it stronger than the original one by filling the whole cavity. I tried to account for all nooks and crannies of what was left and measure every possible dimension.

This is what the new parts will look like.

This would have been too time consuming to set-up for multiple side machining on the CNC, so it was handed over to ninja colleague code-named johmer to be 3D printed.

Test fit. The button was re-soldered with heavier wire too.

Looking good. Nothing interferes.

Body assembled.

Cry Baby v2.0. The return.

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DIY flying fox

November 27, 2017

First, let’s make a brake.

Stock.

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Fixture.

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Dialed in.

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Stock to size.

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Flip, make pockets.

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Pilot hole, flip, repeat. Finish on the drill press.

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Profile.

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Chamfer, flip, repeat.

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Ready.

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400 grit, 800 grit, finishing.

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Complete brake assembly: fox + cord + bungee + accessory cord + tent stakes.

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Fixed side. Protecting both the tree and the cords/slings

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Adjustable side. Mezzo poldo for tightening (3:1 mechanical advantage).

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Fox on.

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Tent stakes pitched. Plus a couple of round gaskets in front of the brake to prevent metal to metal impact.

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Trimmed handlebar plus grips, two belaying carabiners, cord and twin pulley (or golden heart according to Nelly).

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Two clove hitches in the middle.

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Pulley on. Plus backup. Everything is rated between 24 and 30kN (i.e. can lift a truck), but it doesn’t harm to have a backup.

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Volunteers.

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Wheeee…

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DIY kid centaur costume

February 12, 2017

Nelly watched Fantasia. Then she wanted to be a centaur.

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Trick or treat

October 30, 2015

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And Then They Were 4

December 17, 2014

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