DIY Lightbox
Specification for an SLA print post-processing UV lightbox
Objective:
Create a simple, inexpensive, yet stylish and effective post-print UV curing lightbox to augment the Formlabs Form1+ 3D printer. Also, design and size this box such that the Form1+ actually sits on top of it, minimizing consumed footprint on my
workbench. Also, incorporate leveling feet which the Form1+ unfortunately lacks.
Specs:
Size - 27.5cm wide, 20.5cm tall, and 29.5cm deep
Mat’l - 1/2" MDF box, radiused to approximate Form1+
3/16" acrylic mid, back, and control panels
Features:
adjutable height felt feet
front access door
adjustable safety switch keeps lights off when door open
lighted rocker main power switch
12v motor rotates UV see-thru part platform
12v PWM motor speed controller
(2) 5m self stick UV LED strips (300 LEDs each)
internal 12v power supply
powersupply ‘on’ indicator light
Parts:
Junk pile:
12v power supply: free
Using a 12v/5a power brick I had kicking around.
Printed parts:
motor mount (motor-mount.stl)
door aligner (door-align.stl)
motor shaft to platter interface
Ebay:
If you need a 12v power supply: ~$20.00
http://www.ebay.com/itm/12V-2A-3A-5A-6A-8A-10A-Power-Supply-Adapter-Transformer-For-3528-5050-LED-Strip-/201134927007?pt=US_Lighting_Parts_and_Accessories&var=&hash=item2ed4936c9f
gearmotor: ~$12.00
http://www.ebay.com/itm/DC-12V-0-06A-2RPM-Speed-Reducer-High-Torque-Worm-Geared-Box-Micro-Motor-/321536360296
(2) UV LED Strips: ~$14.00ea (~$28.00 total)
5M Ultraviolet UV 395-405nm 3528 SMD 300LED Flexible Strip 12V
http://www.ebay.com/itm/161349617292
Home Depot:
1/2"x24"x48" MDF: ~$10.00
Self-stick EPDM weather stripping to seal the door: ~$5.50
http://www.homedepot.com/p/Frost-King-E-O-5-16-in-x-1-4-in-x-17-ft-White-EPDM-Rubber-Weatherstrip-Tape-V25WA/100017014
Piano hinge: ~$6.00
http://www.homedepot.com/p/1-1-16-in-x-12-in-Bright-Nickel-Continuous-Hinge-14649/203339971
Door handle: ~$4.00 (never added this, and kinda like look of no handle)
http://www.homedepot.com/p/Liberty-3-in-Satin-Nickel-Arched-Pull-P22667C-SN-C/202587563
Magnetic door latch: ~$1.00 (if I did this again, I would use a push-to-release type, like on a stereo cabinet)
http://www.homedepot.com/p/Amerock-Magnetic-Catch-BP9793W/202176372
Adjustable felt feet: ~$4.00
http://www.homedepot.com/p/Everbilt-Beige-Round-Felt-Threaded-1-in-Stem-Glides-4-Pack-49908/203661113
Radio Shack:
Microswitch to cut power when door opens: ~$3.50
http://www.radioshack.com/product/index.jsp?productId=2049718
Master switch to control power supply: ~$5.00
(Radio Shack) http://www.radioshack.com/product/index.jsp?productId=2103602
Everything Plastic: (local plastics mfg that sells scrap by the pound):
http://www.everythingplastic.net/
3’x1/8" acrylic rod: ~$0.40
light pipe from ps to front panel
3/16" acrylic sheet stock: ~$7.50
small scrap pieces for the mid, back, control panel and platter.
Originally I bought a 2rpm gearmotor, but when it arrived, it actually went 36rpm! I complained, the seller said there was a mixup, and there were no more 2rpm motors. He gave me the motor, and refunded the card. That’s why I added in the PWM motor controller.
Pictures of the build follow.
The printed parts in .stl format
microswitch-block2-microswitch-block.stl (48.8 KB)
microswitch-block2-part-door-alignment-ramp.stl (23.6 KB)
microswitch-block2-part-platter-hub.stl (344.1 KB)
the Forum software won’t allow the motor mount stl (it’s the print in the lightbox) as it’s too big 
send me your email and I’ll send it along if you want it.
Happy Hacking!
