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Posts from — February 2014

Firing Assembly

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Set up the firing tube and the motors and…
It doesn’t work.
The ball barely moves out of the tube.
Since it’s probably a lack of motor power, there’s not much I can do about it.
Oh well.

February 15, 2014   No Comments

Firing Tube Print Complete

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Looks like it turned out pretty good.

February 15, 2014   No Comments

Firing Tube

Here’s the model of the firing tube.  The large tube is the right diameter for a Ping-Pong ball.  The holes in the sides are where the pitching wheels will go.  The bit off the side is where the motor mounting will attach.

This is printing right now, and it says it’ll take about an hour and a half to finish.  I tend to have bad luck with prints like this.  They always seem to peel away from the baseplate or split at one of the layers.  It if doesn’t work, I’ll try using PLA, which is less like to do that.  Unfortunately, PLA is more likely to gum up my printer…

February 15, 2014   No Comments

Better Fit

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The second attempt at the slider turned out better. 
The second revision of the motor holder didn’t work out so well, though.  I messed up the measurement, so the holes didn’t align.  Have to try that one again.

February 15, 2014   No Comments

Slider, Round 1

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The motor fits fine, but it’ll slide right out if I don’t secure it using the screw holes.  So I’ll need to stick them in the model.
The slide rail, however…  The slider is way too loose.  I’ll need to shrink the hole just a bit.

February 15, 2014   No Comments

Hot Off The Presses!

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I don’t know how far apart the wheels will need to be.  So instead of printing out something with exact (and incorrect) measurements, why not make something adjustable?  This will let the motors slide, then get locked into place when I find the right spacing.

February 15, 2014   No Comments

Perfect Fit

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The 3D printed tube is a perfect match.  Time to get working on the other components.

February 15, 2014   No Comments

Time To Get The Printer Involved

The cardboard tube didn’t cut it.  So why not just make a tube to my specifications?  What else did I buy a 3D printer for?

February 15, 2014   No Comments

Time to kick it up a notch.

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Carved out cardboard tube protoype isn’t doing the trick.  Time to kick it up a notch…

February 15, 2014   No Comments

Testing out the motors.

One clockwise, one counter.
Plus a ping-pong ball.

The motor ended up getting flung further than the ping-pong ball.

Hmmm.  Needs work.

February 15, 2014   No Comments