Did you ever want a specific colour or size of frit and not have it? I am sharing my process for making your own "clean" frit. No manual "smashing"
This process will not only give you the quantity, colours and sizes of frit on demand, but it can use up those fusing glass bits you have been diligently hoarding and possibly save you money in the long run.
Items you will need:
Scrap fusing glass
Stainless steel strainer with short handles (long handles are fine if you have the space but don't be tempted to grab it by the handle. You will get burned!)
Long metal barbecue tongs (Mine are stainless steel, 16" long with a scalloped gripping edge and no silicone)
2-3 "Shooter" marbles (approximately 1" in diameter. You can steal them from your kid's marble bag, they probably won't miss it because they don't know what to do with it anyway!)
Quart sized sturdy plastic container with lid. (1kg cleaned out peanut butter containers work well)
Tub of water to accommodate the strainer and to cover the entire amount of glass
Nesting sifters (I sell them and/or rent them at Cranberry Stained Glass)
Piece of paper to place under sifters to capture powder if you are so inclined
Containers to store your bounty. (5 per colour if you are keeping the powder, otherwise 4) Recycled frit jars, zip bags, plastic Rubbermaid, Dollarstore finds...
Choosing Your Glass.
I reccommend that you do one colour at a time per strainer. You can do more than one strainer at a time if you have multiple strainers and the space in your kiln. But, for your first time, keep it simple and do one strainer with one colour. You can "fill-yer-boots" once you are familiar with the process. Mixing colours afterwards once frit is complete is reccommended. Don't do more than 2 pounds of glass in one strainer load. This is a great way to use all your compatable fusing scrap. Clean any marker that is not black sharpie off the glass. Roughfly cut or snip the glass up into manageable pieces that fit within the strainer. Set the glass in the strainer and place it in the room temperature kiln. Make sure the strainer is not touching the elements or the thermocoupler and is not too tall for the kiln. No need to kilnwash or spray the strainer with a releasing agent, the kiln will not be hot enough to cause glass stick to anything.
Note: I have experienced some incompatability within Oceanside "System 96" and Wissmach "96" Glass. I reccommend that you do not mix Oceanside and Wissmach in your frit or on your project.