3D scanning and 3D printing of nylon cog

1

I’m new to makehackvoid so please forgive me if I’m using this forum incorrectly.

I have an automatic, chook hatch on my chicken coup which has been bespoke made for a particular vehicle, automatic, car aerial. At dusk the aerial closes the hatch and at dawn it opens the hatch.

When I was making the chook hatch someone suggested makehackvoid but then I found this simple solution.

Unfortunately, the aerial got caught on some rough edges (which I have now removed) but in the process of trying to close, it stripped a nylon gear. It was difficult to get the aerial a couple of years ago so I thought it might be quicker, and therefore safer for my chooks from fox attack, for me to get that part 3D printed.

I remembered the makehackvoid and I thought I could learn at makehackvoid about 3D scanning and 3D printing whilst repairing my automatic chook hatch cog.

I’m retired so I should be able to attend at most times. If I go to tomorrow’s meeting can someone show me how to scan or redesign my cog and print it using a 3D printer? Is that how makehackvoid works? I can pay or make donations for materials if needed.

Jhock.

2

With something like a gear, I would think you would be better off creating a model just using a set of vernier calipers to measure everything.

Usually manufactured things are pretty easy to make models of because they’re almost always designed to whole fractions of a mm or inch.

I can help you make a 3d model of the gear, but you’ll need someone else to show you how to 3D print it… Not my area of expertise.

3

Hi Harvs,

It has been suggested to me on other forums that designing the gear rather than 3D scanning it is a better option so I’m keen to see how that can be done.

4

I’ll be in the space tonight and tomorrow night. If you come along we can have a go.

5

Okay. Thanks. I might be a bit late tonight but I’ll try to be there.

6

I would also recommend printing in something​like PLA first, as it’s an
easy & cheap plastic to print, so you can fix up the dimensions abd other
gremlins before doing the harder/ more expensive material

7

There are great tutorials with openscad on how to model things like cogs on youtube and the openscad site