EXCEEDED RECOMMENDED WATER / POWDER RATIO

REDUCE WATER TO WITHIN RECOMMEND RANGE (38 – 40/100)
NOT MIXED LONG ENOUGH

HAND MIXING – MIX 3 MIN. MECHANICAL – MIX 3 - 4 MIN.
METAL AND, OR FLASK TEMP TOO HOT

REDUCE METAL AND, OR FLASK TEMPERATURES
CURE TIME NOT LONG ENOUGH AFTER SET

LEAVE FLASK UNDISTURBED 1 – 2 HOURS BEFORE STARTING BURNOUT
INVESTMENT PROCESSED PAST AVAILABLE WORKING TIME

PROCESS NOT LONGER THAN 8 – 9 MIN.
MOLD HEATED TOO QUICKLY WATER / POWDER RATIO

SLOW DOWN RATE OF TEMPERATURE RISE
EXPIRED INVESTMENT IMPROPER STORAGE

USE FRESH POWDER WITHIN RECOMMEND STORE IN COOL, DRY AREA

WATER RATIO TOO LOW
ADJUST W/P RATIO TO: 38/100- VACUUM MIXING -40/100- HAND, MECHANICAL MIXING
 
NOT MIXED LONG ENOUGH WATER / POWDER RATIO
DO NOT MIX LESS THAN 2.5 - 3 MINUTES
 
INVESTING CYCLE TOO LONG
FOLLOW INSTRUCTIONS DO NOT PROCESS PAST 9 MINUTES
 

PATTERNS TOO CLOSE TO POUR BUTTON
LEAVE MORE SPACE BETWEEN BOTTOM ROW AND BUTTON
 
FLASK TEMP. TOO HIGH
REDUCE FLASK TEMPERATURE
 
SPRUED IMPROPERLY
SPRUE TO THICKER SECTION OF DESIGN
 
SPRUING TOO SMALL
SPRUE TO HEAVIEST SECTION OF DESIGN. USE LARGER GATE
 

PATTERNS TOO CLOSE TO POUR BUTTON
LEAVE MORE SPACE BETWEEN BOTTOM ROW AND BUTTON
 
FLASK TEMP. TOO HIGH
REDUCE FLASK TEMPERATURE
 
SPRUED IMPROPERLY
SPRUE TO THICKER SECTION OF DESIGN
 
SPRUING TOO SMALL
SPRUE TO HEAVIEST SECTION OF DESIGN. USE LARGER GATE
 

CONTAMINATED METAL
CLEAN METAL OF INVESTMENT, ETC.
 
FLASK TEMP. TOO HOT
REDUCE FLASK TEMPERATURE
 
INCOMPLETE BURNOUT
HOLD LONGER AT PEAK TEMP.
 
METAL REUSED TOO MANY TIMES
USE NEW, UNUSED METAL, OR MIX NEW METAL WITH REMELT
 

METAL OVERHEATED
REDUCE METAL TEMPERATURE
 

CRUCIBLE OLD, DETERIORATED METAL OXIDES
REPLACE WITH NEW CRUCIBLE REFINE METAL
 

SHARP CORNERS BREAKING OFF
INCREASE MOLD STRENGTH MODIFY DESIGN
 

TOO MUCH WATER USED TO MIX
DO NOT EXCEED 40% WATER FOR MIXING.
 

ROUGH MODEL SURFACE
POLISH MASTER MODEL & REMAKE RUBBER MOLD
 
TOO MUCH SILICONE. OR TALC MOLD RELEASE
CLEAN MOLD AND REDUCE SILICONE, OR TALC USED
 
FLASK TOO HOT
REDUCE FLASK TEMP.
 
METAL TOO HOT
REDUCE METAL TEMP.
 
EXCESS STEAM DE-WAX
REDUCE TIME IN STEAM TO LESS THAN ONE HOUR
 
FLASK NOT CURED LONG ENOUGH BEFORE BURNOUT
CURE MOLD A MINIMUM OF 1- 2 HOURS
 

PEAK BURNOUT TEMP. EXCEEDED
DO NOT EXCEED 750C.
 

METAL SPENT, REUSED TOO MANY TIMES
REFINE, USE FRESH METAL
 
METAL OVERHEATED
USE CORRECT TEMP. FOR CASTING