Tips for Casting with Resins from 3D Printing

by parisjc on November 20, 2014

Casting with resins has created a whole new set of surface problems. Besides burnout problems, resin is porous and needs to be coated with something to ensure and smooth casting. Jewelers are using plastic spray paint and even mineral oil to accomplish this. Here at TIJT one of our students decided to try hair spray…and it worked perfectly! It seemed to be smoother than the paint (which can run if used to heavily) and did not attract nodules like the mineral oil.

Just spray the resin with hair spray about 30 minutes before investing. We are casting with the PIC 100, a much simpler resin than the EC 500 to work with because it does not require a separate investment. Invest with satin cast and adjust the burnout for the expansion of the resin for a perfect casting.  The first picture shows a resin model from our growing machine that has been coated with hair spray.  The second picture shows the same model after casting.

wax 1 wax 2 (1)

 The Texas Institute of Jewelry Technology offers training in computer aided design and computer aided manufacturing that introduces the latest technology.  Students learn to design virtual jewelry and then send it to a multiple axis milling system or 3D printer to provide the perfect model for casting.  For more information visit our website: www.parisjc.edu/tijt

 

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TBT: Nifty Tweezer Holder

by parisjc on November 13, 2014

For Throwback Thursday we would like to share the blueprint for a nifty tweezer holder that our students have been making here at TIJT for years.  Our students fabricate them our of 1.5mm thick brass plate and love them for setting up chains and rings for soldering.

Tweezer holder blueprint

Tweezer holder

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Neat Bench Organization

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Achieving Perfect Spacing in Channel Setting Sometimes even with careful preparation you can end up with poor spacing while channel setting stones.  In the picture below it can be seen that the two end stones on the right side of the ring are too close together. When this happens perfect spacing can still be achieved […]

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Have you ever thought about modifying your chuck key?

October 7, 2014

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Transform a simple pair of ignition pliers into your favorite stone setting pliers in 5 minutes.

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As the Semester Ends

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1st As the semester ends, we (the first semester students) are amazed at how quickly the time has gone by! We’ve had fun getting to know each other and have enjoyed hearing the stories Mrs. Omori tells as she tries to instill in us the importance of safety as we work. After cutting out geos, […]

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David Gardner’s Jewelers Visits TIJT!

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  David Gardner of David Gardner’s Jewelers in College Station, TX came to TIJT on Monday, April 1st. He brought with him one of his stone setting experts and former TIJT graduate, Alfonzo Luna, to do a demonstration on Micro Pave, but we learned so much more than just a little stone setting! As the […]

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The TIJT Recap