Lasers, silicone, and concrete oh my!! We love making things that serve multiple purposes and had this idea to make a candle holder that works for tapered candles and tealights. Thanks Quikrete for sponsoring this video, check them out here: https://www.quikrete.com/

Our video on how to finish/cure SLA prints:    • How To 3D Print with LASERS! (SLA)  

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TOOLS / MATERIALS (affiliate)
■ Quikrete non-shrink precision grout https://goo.gl/uB6pGS
■ Similar Quikrete grout (available online) https://amzn.to/2Lj6rdp
■ Silicone https://amzn.to/2stJNYZ
■ Clear acrylic spray paint (to seal) https://amzn.to/2JoXGRN
■ Release spray https://amzn.to/2HeJjuq
■ Peopoly Moai https://goo.gl/kKuTqz
■ Resin https://goo.gl/79jieT

FILMING GEAR (affiliate)
■ Fujifilm X-T10 http://amzn.to/2pblgac (main camera)
■ 35mm F 1.4 lens http://amzn.to/2whwP0N (makes things look fancy)
■ Sony Cybershot DSC-RX100 V http://amzn.to/2DJTHJF (slow-mo camera)
■ Main tripod http://amzn.to/2whGqED
■ Pan head for tripod http://amzn.to/2fhX3wh
■ Lighting kit http://amzn.to/2vs5sDB
■ Wireless lav mics http://amzn.to/2BCqtKQ

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MUSIC
Again by David Cutter
Hustling by David Cutter
Stars in the Sky by David Cutter
Nothing by Joakim Karud

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■ James Allen
■ Kyle C

The design started off in Fusion 360 with the intent to hold both tealight candles and tapered candles. We used a stereolithography (SLA) 3d printer (the Peopoly Moai) to make a master model. SLA has the advantage over fused filament fabrication (FFF/FDM) because it has a smoother and more accurate surface finish.

We sealed the SLA print because it can interfere with the silicone curing process by spraying some clear acrylic spray paint. We then applied mold release to prep for the silicone pour! We first tried platinum cure silicone but it was too finicky so we switched to tin cure silicone. We talked with Quikrete about what concrete mix to use and they recommended we use non-shrink precision grout. The main things we liked about this mix is that it was really fine (so it could capture tiny details), it hardened pretty fast, and its final strength is really impressive.