Heavy Duty Lazy Susan for Full Body Scanning
by fredini, published
A 3D scanning turntable capable of supporting the weight of a human being. Since discovering ReconstructMe, I've been looking for a suitable turntable setup for creating full body scans of people. Most of the plans out there are for tabletop photo or scanning setups that won't handle a lot of weight.
Lo and behold, I found these plans cheesycam.com/motorized-lazy-susan-heavy-duty/, for using the
front wheel hub assembly from a car as the rotation bearing and an electric drill to power turning it. My implementation can be built for around $100.
This device is the centerpiece of my Coney Island Scan-A-Rama Project- a next generation photo booth in which subjects are scanned and printed.
I have added a 12volt 4RPM high torque rotisserie motor with a 3D printed pulley driving a bicycle inner tube belt drive. I just uploaded images of the motor (got it on ebay), the updated assembly, as well as source files for my pulley print, with slots for a set screw and nut.
Added a new pulley in two parts that can be printed on a Replicator build platform, then glued afterwards. Drill afterwards to use a setscrew through a bolt in the slot against the flattened part of the motor shaft.
I have also added a foot pedal to apply power to the turntable motor. However, I am seeking advice for a braking mechanism for the wheel when power is not applied. I was thinking a solenoid or something that could retract as power is on. I have safety concerns for the wheel spinning as people climb on or off the wheel. Any thoughts on this are appreciated.
Recent Commentsview all
Great design Fredini, thanks for sharing it, I have built one based on your design and just need to to add the motor. I have a 12v rotisserie motor from China but am wondering what kind of power supply to hook it up too, i.e how many watts will it need to turn up to 3 folk around? Look forward to seeing your brake design too.
I was going to suggest using the turntable motor for braking by having a N.C. (normally closed) relay wired to it in order to short the motor leads together when the motor is deactivated. Should work for DC motors. But I think I am too late.....you already built the brake.
Liked Byview all
Give a Shout Out
-Front Hub Assembly from car (~$30 on Ebay)
-2x 28" plywood circles (top plates)
-1x 12" plywood circle (Inner part for belt drive pulley)
-1x 14" plywood circle (outer part for belt drive pulley)
-1x 28" plywood square (base)
-10" plywood square
-some 2x4 and plywood scraps
-6x 3 1/2" x 3/8" carriage bolts
-3x 3"x 1/2" lag bolts
-old bike tire tubes for the belt to power the turntable
-12 volt 4 RPM high torque rotisserie motor
- Foot Switch (such as harborfreight.com/power-maintained-foot-switch-96618.html)
1) Using a router or jigsaw, cut out the circles from a sheet of 3/4" plywood.
2) Next, cut inner circles out of the center of both squares and the 12 and 14" circles. This gives a place for the center of the hub assembly to recess into so that it can be bolted onto the plywood.
3) After placing the hub, mark the wood and drill holes for the bolts.
4) Bolt the hub to the base. Add 2x4 blocks to the corners of the base as feet.
5) Bolt the top turntable to the top of the hub. The order the circles stack is 14", 12", 28" 28". This creates a pulley to power turning the platform and a double layer of plywood on top for people to stand on.
6) Mount the rotisserie motor with the printed gear on a 2x4. Put the bike tube around the pulley under the turntable, and stretch it around the pulley on the motor. Screw the 2x4 to the base so that the belt is stretched tight.
Now get someone to stand on it, fire up ReconstructMe, and start scanning with the human highres setting!
You must be logged in to post a comment.