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Sonic screwdriver with rotating core

Started by steve757, May 03, 2020, 11:39 pm

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steve757

tb1.jpg
While tearing down a broken camcorder I came across a very light weight video head with lots of details.

tb2.jpg
I had some tiny motors that would spin it using only a couple AA cells.

tb3.jpg
Thus this design was born.  Because of the suggestive shapes, this one is known as the turkey baster.

tb4.jpg
A large cylinder of aluminum is radius turned to make a half sphere.

tb5.jpg
A radius jig moves the cutter in the proper arc.

tb6.jpg
Slow cutting and filing creates a smooth half sphere.

tb7.jpg
The final shape looked like I had robbed someone of their artificial hip joint, so I lathed in some grooves for texture.

steve757

tb8.jpg
The cup was pretty heavy so I drilled out some lightening holes.

tb9.JPG
The motor and disk fit inside the half sphere.

tb10.JPG
The disk gets some UV reactive plastic dots.

tb11.JPG
The dots glow different colors under a UV LED.

steve757

Jul 19, 2020, 10:16 pm #2 Last Edit: Jul 29, 2020, 09:36 pm by steve757
the body gets turned on the lathetb12.jpg

tb13.JPG
Some flat stock will be milled and filed to make the struts.

steve757

Jul 19, 2020, 10:26 pm #3 Last Edit: Jul 19, 2020, 10:38 pm by steve757
The struts are attached to the base cup
tb17.jpg

Bar stock is milled to make a control panel to fit in slot milled in main shaft.
tb18.jpgtb19.jpg

the emitter is angle drilled for retaining posts
tb20.jpgtb21.JPG

the main shaft is preassembled
tb22.jpg

the 3D printer renders an LED socket for the emitter
tb23.JPG

Internal wiring is next.....

greatwazoo42

Wow!  Excellent work so far!

steve757

Thank You!  This is the bulkiest sonic I've done....maybe it should be classified as some other tool, due to the weight.

Volpone

"My dear Litefoot, I've got a lantern and a pair of waders, and possibly the most fearsome piece of hand artillery in all England. What could possibly go wrong?"
-The Doctor.

steve757

Yes, the larger handle would give you more torque to turn something....

A push on-off button is put in for the main power and a small push button for the trigger.tb24.jpg

the wiring as usual is tight....tb25.jpg

some filing, sanding and felt wheel polish will finish this design.....

Angelus Lupus

Certainly looks like a heavy-duty tool!
A mixed-up non-conformist, trying to fit in.

steve757

The switches are potted and the control panel attached with "330" clear epoxy
tb26.jpg

A buffing wheel and some tripoli shine the metal up nice.
tb27.jpg
Can we upload short videos yet?



steve757