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INSTRUCTIONS FOR SMALL SUNBEAM BOWL

Before starting, have your molds ready. A thin coating of GM Foam Mold Release should be brushed onto the interior mold surfaces of both positive and negative, and allowed to dry thoroughly. Excess release can be whisked away with a dry brush. We use an O’Haus triple beam balance for gram weights.

1. SHAKE THE BOTTLES OF COMPONENTS BEFORE YOU USE THEM, ESPECIALLY THE BASE.
2. Into the small Mixmaster bowl, add together: 150 gms FOAM LATEX BASE
30 gms FOAMING AGENT
15 gms CURING AGENT.
3. Into a small cup, weigh 14 gms GELLING AGENT. Set aside.
4. Begin the foaming process, according to one of the schedules below.
5. When the processing is completed, pour or inject the foam into cool molds. Work quickly.
6. Any remaining foam can be poured onto a smooth surface, where it should set to a solid mass in 5 to 20 minutes.. When you can press it with a finger and a permanent indentation is formed, the foam has gelled. Place molds in oven, and cure at 185° F for approximately three hours. Small thin molds may take as little as two hours, and large thick molds can take five or six hours at 170-175°F. WARNING: Do not use your household oven for curing foam. Vapors given off during curing are TOXIC for food use.
7. Let the molds cool in the oven for half an hour after the oven is turned off, then slightly open the oven door to let them cool more. Removing very hot molds from the oven will crack them.
8. Demold foam pieces from warm molds. DO NOT LET MOLDS COOL TO ROOM TEMPERATURE BEFORE DEMOLDING. If they do cool, you can still remove the pieces, but it will be much more difficult, and can crack the molds.

 

COLD ROOM SCHEDULE (66-68° F) 17-1/2 minutes Total Time
 
Speed Minutes Minutes Elapsed Total
       
# 1 for 1 (mixing) 1  
       
# 7 for 6(whipping) 7  
       
# 4 for 4(medium refine) 11  
       
# 1 for 5(ultra-refining) 16 POUR GEL at 16

#1 30-seconds: Add GELLING AGENT, then
     
#1 30-seconds: Turn bowl backwards by hand to mix gel, then
     
#1 30 seconds: Let mixer run until 17-1/2 minutes have elapsed. OFF NOW.

 

 

 

 

 

NORMAL ROOM SCHEDULE (69-74° F) 14-1/2 minutes Total Time
Speed Minutes Minutes Elapsed Total
       
#1 1(mixing) 1  
       
#7 6(whipping) 7  
       
#4 3(medium refine) 10  
       
#1 3(ultra-refining) 13 POUR GEL at 13

#1 30-seconds: Add GELLING AGENT, then
       
#1 30-seconds: Turn bowl backwards by hand to mix gel, then
       
#1 30 seconds: Let mixer run until 14-1/2 minutes have elapsed. OFF NOW.

 

 

 

 

 

WARM ROOM SCHEDULE (75-80° F) 12-1/2 minutes Total Time
 
Speed Minutes Minutes Elapsed Total
       
#1 1(mixing) 1  
       
#7 6(whipping) 7  
       
#4 2(medium refine) 9  
       
#1 for 2(ultra-refining) 11 POUR GEL at 11

speed #1 for 30-seconds: Add GELLING AGENT, then
       
speed #1 for 30-seconds: Turn bowl backwards by hand to mix gel, then
       
speed #1 for 30 seconds: Let mixer run until 12-1/2 minutes have elapsed. OFF NOW.


If your foam gels too fast, cut a minute or two off your ultra-refining time, or use a little less gelling agent (11 or 12 gms). If your foam gels too slowly, add a minute or two to your ultra-refining time. LARGER BATCHES USE DIFFERENT SCHEDULES. Undercured foam will spring back too slowly. The latex base needs to be shaken once a week, to keep the “serum layer” from settling on the bottom. Using foam latex is a skill, and it can be tricky. Please call for information, schedules or technical support.

NON-WARRANTY All materials are sold in good faith “AS IS” and without any warranty, express or implied.
© 2003 GM FOAM, INC.


INSTRUCTIONS FOR SUNBEAM MIXMASTER LARGE BOWL

2-1/2 BATCH MIX Soft mix: 6 to 6-1/2 volumes Temp 68-70º F, humidity about 45-55%

1. SHAKE THE BOTTLES OF COMPONENTS BEFORE YOU USE THEM, ESPECIALLY THE BASE.
2. Into the large Mixmaster bowl, add the following: LATEX BASE 375 gms
FOAMING AGENT 85 gms
CURING AGENT 40 gms.
3. Into a small cup, weigh 35 gms GELLING AGENT. Set aside.
4. Process the foam according to the following schedule:

 

speed minutes elapsed  
       
1 1 1 Mix ingredients.
       
12 7 8 Whip. Height less than 1” from rim of bowl. Backbowl for more volume, if needed.
       
8 2 10 Continue rising slightly. Height about 3/4” from rim of bowl.
       
4 3 13 Occasionally backbowl to break up bubbles in center.
       
2 3 16 Finish refining. Begin adding Gelling Agent

2 1/2 16-1/2 Take 30-seconds to pour the gel.
       
2 2 1/2 17 Backbowl (slowly turn the bowl backwards by hand).
       
1 1/2 17-1/2 Continue mixing until 17-1/2 minutes, when the mixer is turned off.
       
       

5. NOW FOLLOW STEPS 5 THROUGH 8 ON THE SMALL BOWL SCHEDULE FOR FILLING, CURING, AND DEMOLDING.

Backbowling (turning the bowl backwards by hand) is the most effective way to disperse the GELLING AGENT. Do it slowly, so air won’t be mixed in. Variations in the above schedule are to be expected, since weather conditions are so different. Temperature and humidity variations affect the working time of the foam. The main principles to remember are:

  HIGHER TEMPERATURES MAKE THE FOAM GEL FASTER, and
  HIGHER HUMIDITY MAKES THE FOAM GEL FASTER.

To correct for these conditions, use these tips: In hot and/or muggy conditions, cut the GELLING AGENT DOWN TO 30 GRAMS, AND CUT A MINUTE OR TWO OFF THE REFINING TIME. In other words, pour less GELLING AGENT into the mix, and pour it sooner. For example, in an 80° F. room, you may have to pour at 13 or 14 minutes elapsed time, instead of 16, as the schedule shows. Another way to extend the working time is to add extra Foaming Agent. This protects the latex from gelling as fast. A large Sunbeam Bowl could take up to 90 or 95 grams of Foaming Agent, to work properly in a very hot room of 85-90_F. We also have a product available called Foam Stabilizer which is designed for high temperature and humid conditions. Foam Stabilizer extends working time when used at the rate of 1 to 3 grams per 150gms latex base.

In colder and drier conditions, the reverse is true. To prevent a very slow gel, you can use more GELLING AGENT (for example, 40 to 45 gms / 375 gms latex base), and ADD A MINUTE OR MORE TO THE REFINING TIME.

Where very soft batches are desired, we recommend using 5-10 grams GM Flow Increaser™ per large batch, added to the bowl before whipping. The Flow Increaser has a frothing effect on foam, if added at the beginning of the mix. The resulting batch can be whipped close to the top of the bowl, if desired, or any height less than that. Backbowling during the high speed whipping cycle will add greater height to any mix. Remember that the higher you whip the foam, the softer it will be, but it becomes more difficult to pour, and tends to trap more air, since it is thicker at high volumes. The Flow Increaser can help the pourability when added during the refining speed. We also have another additive, called MICAD™. Using 2 to 5 grams of MICAD per 375 gms Latex will give greater volume, and softer foam, without making the cells too large. There is a slight slowing of the gel when using MICAD, so add extra gelling agent when using MICAD. And as always, all of our additives are compatible with each other. You can use combinations of Flow Increaser, Stabilizer, Micad, and Cell Choke, as you see fit. Just be careful not to over whip, or to retard the gelling by adding too much of these additives. If you are looking for the softest foam possible, these fine additives will work for you.

Using foam latex is a skill, and it can be tricky. Please call for information, schedules, or technical support.

NON-WARRANTY All materials are sold in good faith “AS IS” and without any warranty, express or implied.
Keep these and all chemicals out of reach of children.
© 2009 GM FOAM, INC.

 


 

 

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