Whip Mix Snap-Stone and Lab Stones: Choosing the Right Gypsum

Whip Mix Snap-Stone is an exceptionally fast setting dental stone that lets you separate the cast from the impression in about 5 minutes, which makes it the right gypsum for same-day appliances, study casts and quick articulator mounting. It is not meant to replace every stone in the lab, so knowing where it fits saves both time and material. Chase Dental Supply carries Whip Mix Snap-Stone in 11 lb and 33 lb cartons, along with the vibrators, debubblizers and model systems that go with it.

Key Takeaways

• Snap-Stone allows separation of the cast from the impression in 5 minutes thanks to early high compressive strength.
• Whip Mix recommends hand mixing Snap-Stone because it is fast setting.
• It is compatible with all impression materials and comes in a versatile light pink color.
• Typical uses include bleaching trays, mouth guards, splints, custom trays, ortho appliances, temporaries, denture repairs, study casts and articulator mounting.
• Chase Dental Supply stocks an 11 lb (5 kg) carton and a 33 lb pink carton.

What is Whip Mix Snap-Stone?

Snap-Stone is a fast setting gypsum stone from Whip Mix designed to cut the wait between pouring an impression and using the model. Its early high compressive strength is what allows the cast to be separated from the impression in 5 minutes.

Whip Mix states that Snap-Stone is compatible with all impression materials, so the same box works whether your office takes alginate, polyvinyl siloxane or polyether impressions. The light pink color is easy to read for margins and trimming and looks clean for patient-facing models.

For offices and labs that turn around appliances while the patient waits, or that pour a high volume of study models, Whip Mix Snap-Stone 11 lb is a practical size to keep at the bench. Higher volume labs often step up to the Whip Mix Snap-Stone Pink 33 lb carton.

When should you use Snap-Stone vs a standard lab stone?

Use Snap-Stone whenever speed matters more than maximum working time, such as chairside appliances and quick mounts. Use a conventional model stone or a die stone when you need longer working time, vacuum mixing, or the hardness and accuracy required for crown and bridge dies.

Whip Mix lists the following procedures as ones that can be performed faster with Snap-Stone:

Snap-Stone is a good match for vacuum forming work. If you are setting up an appliance workflow, our guide to choosing a Keystone vacuum former covers the forming side of the process.

For crown and bridge working models with removable dies, most labs reach for a high strength die stone with controlled expansion. Our guide to dental stone types from Type II plaster to Type IV die stone explains how each class is used.

How do you mix and pour Snap-Stone for the best results?

Hand mix Snap-Stone, pour it promptly with light vibration, and separate on schedule. Because it sets so quickly, Whip Mix recommends hand mixing over a long mechanical cycle.

1. Prepare the impression

Rinse and disinfect the impression according to your protocol, then remove excess water. A light coat of Whip Mix Smoothex Debubbling Solution reduces surface tension on polysulfide, silicone or polyether impressions so the stone flows into fine detail.

2. Measure and hand mix

Weigh the powder and measure the water using the ratio on the Whip Mix instructions for use. Add powder to water, then spatulate briskly until the mix is smooth and uniform.

Accurate measuring matters more with a fast setting stone, because there is little time to correct a mix that is too thick or thin. Mix only what you can pour right away.

3. Pour on a vibrator

Flow the stone in from one side of the impression and let vibration carry it around the arch. The Whip Mix General Purpose Vibrator has a 5.5 in. top for single impressions, while the Whip Mix Heavy Duty Vibrator offers an 11 in. by 8.7 in. table and long or short wave options for multiple pours.

4. Separate and trim

Once the stone has reached the separation time listed by Whip Mix, remove the cast carefully along the path of insertion. Trim and finish as usual.

If you are pouring a slower setting model or die stone instead, vacuum mixing improves density. See our Whip Mix Vac-U-Mixer guide for that workflow.

What other Whip Mix model products work with Snap-Stone?

Snap-Stone is one part of a model workflow that also includes pinning, mounting and articulation. Whip Mix makes several systems that reduce steps around the stone itself.

The Whip Mix MainStay Disposable Articulator Pin System does not require model formers or a gypsum base and adjusts to any occlusal relationship. Its base has no external walls or raised edges, so it works with gypsums of all expansion ratios. The quadrant kit includes 50 articulators, 100 MainStay pins and 3 support rods.

For sectioned die models, the Whip Mix MainStay II Dowel Pin System uses a tapered dual pin with a protective sleeve and rubber end caps to prevent reverse placement of sectioned dies. When mounting on a full articulator, Whip Mix Plastic Mounting Plates offer threaded metal inserts and fit Whip Mix, SAMS, Quick and Panadent articulators.

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Frequently Asked Questions

How fast does Whip Mix Snap-Stone set?

Whip Mix Snap-Stone is an exceptionally fast setting stone with early high compressive strength. According to Whip Mix, it allows separation of the cast from the impression in 5 minutes.

Should Snap-Stone be vacuum mixed or hand mixed?

Whip Mix recommends hand mixing Snap-Stone because it is fast setting. Measure powder and water carefully, mix only what you can pour right away, and pour on a vibrator.

Is Snap-Stone compatible with alginate and PVS impressions?

Yes. Whip Mix states that Snap-Stone is compatible with all impression materials. Treating synthetic impressions with a debubblizer such as Whip Mix Smoothex can further improve flow into fine detail.

What is Snap-Stone used for?

Whip Mix lists bleaching trays, mouth guards, vacuum formed splints, custom trays, orthodontic appliances, temporaries, denture repairs, study casts, articulator cast mounting and CAD-CAM restorations. It is best suited to work where a fast turnaround matters.

What sizes of Snap-Stone does Chase Dental Supply carry?

Chase Dental Supply carries Whip Mix Snap-Stone in an 11 lb (5 kg) carton and a 33 lb pink carton. The larger carton suits labs and practices that pour models every day.

Snap-Stone earns its place in any lab or practice that makes appliances on a deadline. Keep it for speed jobs, keep a die stone for crown and bridge, and you will have the right gypsum for every case. Shop the full Whip Mix gypsum and model line at Chase Dental Supply, or email sales@chasedentalsupply.com for help with bulk orders.