Opticast™ Technical Instructions

Recommended for Platinum and other metals with casting temperatures greater the 2000°F / 1093°C, including Stainless Steel, and Nickel or Cobalt based super alloys.

Prepare solution. Mix 1 part Opti-Bind™ Concentrate to 19 parts of Water. Always add Concentrate to Water.	Weigh Investment. 30 ml Solution to 100g powder. 1 lb = 454 g 1 ml = 1 cc
Add investment to solution. Add 3/4 of the powder to the bowl and begin mixing by hand for 20 to 30 seconds to avoid excessive dusting.

Vacuum for 1 minute after boil.

Common Sprue Arrangements A. Pin Cushion B. Standard Sprue Tree

Attach sprue tree directly to two sheets of heavy duty absorbent disposable paper towels.

Place flask over sprue tree. Ensure that there is at least 1 to 1-1/2" of investment above the top of the sprue tree (highest wax model).	Wrap both paper towels around flask and secure with a rubber band or wax.
	Place a collar extending 2-3" above the top of flask, using either tape or rubber sleeve.

Pour the slurry down the side of the flask. Avoid pouring directly onto the sprue tree. Fill 2 to 4mm over the top of the flask.

Vacuum up to 90 seconds. Vibrate vigorously during vacuum procedure.

Carefully slide invested flask off of cardboard base.

Remove collar and paper towel wrapping.	Carefully scrape excess investment from top of flask.

WARNING

 This material contains crystalline silica and shows evidence of causing cancer in humans. IARC Group 1. Prolonged exposure may cause lung injury (Silicosis). Users must comply with all applicable health and safety regulations relating to the safe handling of crystalline silica. See MSDS for information. California Prop 65 Warning: This product contains crystalline silica, a chemical known to the State of California to cause cancer.

LIMITED WARRANTY - Limitation of Kerr's Liability

 Kerr's technical advice, whether verbal or in writing, is designed to assist the user in using Kerr's product. Such advice does not expand Kerr's limited warranty or relieve the user of testing Kerr's products to determine their suitability for the intended uses and procedures. The user assumes all risk and liability for damages arising out of the improper use of Kerr's product.

In the event of a defect in material or workmanship, Kerr's liability is limited, at Kerr's option, to replacement of the defective product or part thereof, or reimbursement of the actual cost of the defective product. In order to take advantage of this limited warranty, the defective product must be returned to Kerr. In no event shall Kerr be liable for any indirect, incidental, or consequential damages.

EXCEPT AS EXPRESSLY PROVIDED, THERE ARE NO WARRANTIES, BY KERR, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES WITH RESPECT TO DESCRIPTION OR QUALITY OF FITNESS FOR A PARTICULAR PURPOSE.