BCS Jupiter Blend TM Sand is an oil bonded, pre-mixed foundry sand made up of fine sharp silica sand, resin and oil. It is used for casting all types of metals. Jupiter Blend Pre-Mixed Sand is READY TO USE right out of the box. Nothing else is required.
Jupiter Blend TM is an oil bonded sand that replaces water bonded sand for metal casting. It doesn't require close attention to moisture content. It is safer too because it doesn't generate potentially explosive amounts of steam.
Oil Bonded sand can also produce a finer surface finish than water bonded sand due to its smooth texture and lack of steam generation. It is easier for the novice to use and obtain professional results.
Jupiter Blend TM molds just like water bonded sands. You can use the same tools, patterns and techniques. The superior adhesion of the sand to itself means less problems with loose sand in the impressions. The only difference is that you can't use water to slick up loose sections. But since Petrobond has excellent self-adhesion, you will encounter fewer problems with crumbling.
The Jupiter Blend oil does burn where it contacts the molten metal. It is good practice to remove the burned sand from your part when shaking out your castings. This burned sand can be scraped off into a bucket and saved for reconditioning when enough has accumulated. Some burned sand in itself isn't a problem, because it can be mixed back into the pile and it will re-absorb oil and work just fine.
NOTE: Jupiter Blend Pre-Mixed sand comes mixed and ready for use. The following information is only for those who wish to mix their own sand.
NOTE: Since I don't have control over the following processes there is no guarantee that they will provide satisfactory results. The amounts of Petro Bond, Oil and Catalyst listed are only guidelines and the actual amounts needed can vary substantially.
New sand MUST be mixed in a muller.
The manufacturers receipe is as follows:
Mixing Procedure:
NOTE: Since I don't have control over the following processes there is no guarantee that they will provide satisfactory results. The amounts of Petro Bond, Oil and Catalyst listed are only guidelines and the actual amounts needed can vary substantially.
Muller Reconditioning:
Superior results can be obtained by mixing with a foundry muller. The process given is just a starting point. You will have to modify it to suit your sand and equipment.
Start with about 1/2 cup of oil per 100 pounds of sand and mix it in thoroughly. I give it about 10 minutes in a Simpson Speed Muller. Smaller mullers will take longer. There is no harm in mulling longer.
Add 1 ounce of catalyst and mull about 20 minutes. Add the catalyst slowly to help disperse it in the sand.
In time the Petro Bond resin will deteriorate as well. At this stage, resin additions and mulling must be employed. Addition of 1% resin and 1% oil is a good starting point. The ratio of oil to resin used is slightly higher than that suggested for the original mix. The oil requirement increases slightly as the mixture is used because of the accumulation of dead material which absorbs oil.
Hand Mixing
Reconditioning Sand is best accomplished by mixing with a proper foundry muller. However in the past I have used the following procedure with some success. You will have to modify it to suit your sand condition.
In time the oil is depleted by burning off and must be replenished. Start with about 1/2 cup per 100 pounds of sand and mix it in thoroughly. Let it stand for a day or two to diffuse into the mix. Don't add too much to start with because it doesn't take much to do the job and will become overly sticky.
Add about 1 ounce of catalyst and mix throughly.
I cover up my pile with plastic sheeting when it's not in use to slow the evaporation of the oils from the mix. Placing the sand in a closed bucket or garbage pail works well too.
I have used 30 W NON-detergent motor oil as an alternative to the Petro Bond oil.
I have also used alcohol instead of the catalyst. Use the type of alcohol that is used for shellac work. Don't use rubbing alcohol because it has too a high water content.
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Copyright 2002 - 2011 Budget Casting Supply LLC. All rights reserved.
Revised: 8-15-11
