Spinner size is limited by hand size. You cannot make it more than 7 bearing large, or you would not be able to spin it. Or could you?
Well, I can spin my 15-bearings spinner:

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May 26

Trash Can Repair

Posted on May 26, 2021 by Konstantin

I have a fancy dual-bin automated electric trash can.
I almost like it (well, if it would also be Alexa-controlled… sounds like a new project idea…)
Anyways, it has 2 bins – for trash and for recycle.
And it has a fancy trash bag holder. Which has an interesting design but way too flimsy and does not stay in place.
So I decided to reinforce it.
Here is my design:

And here is the cutout:
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May 11

Spoon Failure

Posted on May 11, 2021 by Konstantin

Hey, I made another wooden spoon!

Cool!

Wait a minute, why there is word “failure” in the name of this post?
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Mar 07

Is there a chance for fast laser engraving?

Posted on March 7, 2021 by Konstantin

Laser engraving is pretty cool.
However, it has obstacles.
The biggest obstacle is engineering stubbornness.
Let’s take a look how getting mentally stuck inside the box holds us back.

Laser engraving with common GRBL controller is known to be sloooow.

Some folks claim that STM32 controllers are faster.
So I have got one of those and did a bench test.

Here is the board.