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| Re: [Orchid] Red pitch and a bowl | ||
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From: Kelley Dragon Date: Wed Feb 20 20:16:00 2008 |
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========[ Invite a Friend - http://www.ganoksin.com/invite.htm ]======== Dear Julie - Wrap pitch in a sheet of newsprint, and wrap again in an old towel. Take a mallet or hammer (not a good one!) and smack the heck out of it. Check periodically for size of the resulting pieces; take out those that are 1-1/2" overall or less. When done, set the pitch aside in a sealed container - I use an old coffee can. Though a purist would fill the bowl with pitch, I elected to fill 2/3 of the bowl with plaster of paris. If you do this, wait several days for it to completely dry! It takes time, but saves on pitch. When you are ready to put pitch in bowl, turn the oven on to 300 degrees F. Make sure you have SPOUSAL UNIT APPROVAL before this next step! Put some, but not all, pitch in the bowl...use less than you think you will need. Better to build up slowly than to have a spill in the oven! Your aim is to fill the bowl to within 1/8" of the rim. You will find as the pitch gets closer to the top that the finer chunks are better than the bigger chunks. Check about every 10 minutes. Your oven may run hotter or coooler than mine - adjust accordingly. You definitely don't want the pitch to be smoking! Some bubbling will occur, but it should not look like it's boiling. When you have the pitch to the level you want, remove the bowl carefully to a heat-resistant, flat surface. I would not leave it in the oven to cool. Give it plenty of time before you use it! A hot pitch bowl looks just like a cold pitch bowl. Before you use your first time (I'm assuming you are going to be chasing & repousse), gather these things: chapstick old rags denatured alcohol (not isopropyl) wooden paint stirrer jar of water for the paint stirrer heat gun old needle nose pliers the chapstick is for coating the back of your metal before putting it in warm pitch. If you don't do it, a lot of pitch will come up with the metal when you are ready to remove it. Rags & alcohol for cleaning off the metal. When you get really good, you won't pull any pitch away with the metal when you release it. But until then, you will need to be prepared to clean up. Use the heat gun to melt the pitch slightly. don't be in a hurry - you don't want the pitch to smoke or bubble. When putting the metal in the pitch, use the heat gun on the pitch. When it's soft enough, just push the metal down into the pitch, and use the paint stirrer to push the edges of the pitch over the edges of the metal. Wait until the pitch is as hard as a cold tootsie roll before chasing or repousse. ALWAYS assume the pitch is hot enough to burn your fingers. To remove the metal, heat the metal, *not the pitch* with the heat gun. Grab a corner of the metal with the needle nose pliers and pull 'up' as much as possible. Don't drag the metal through the pitch, or too much will stick. To flatten the pitch, prepare the surface, scoop up pitch to put on metal for chasing support, use the paint stirrer. It must be kept wet! If it dries out (& that happens faster than you'd think), then the pitch will stick to it & make a mess. I'll bet you were wondering where that jar of water comes into play - that's where the paint stirrer lives when waiting to be used. Dip it frequently when moving pitch around. I know there's stuff I left out, but in the interest of sending it in a timely manner, I'll quit now. Good luck with whatever your project is. Kelley Dragon ____________________________________________________________________ T h e O r c h i d L i s t Open Electronic Forum for Jewelry Manufacturing Methods and Procedures ____________________________________________________________________ Orchid FAQ: ~ http://www.ganoksin.com/orchid/faq.htm Orchid Archives: ~ http://www.ganoksin.com/orchid/archive Orchid Galleries: ~ http://www.ganoksin.com/orchid/gallery.htm Invite a Friend: ~ http://www.ganoksin.com/invite.htm ____________________________________________________________________ Tips From The Jeweler's Bench - Article Archive ~ http://www.ganoksin.com/borisat/tip_sear.htm The Jeweler's Selected Bibliography List ~ http://www.ganoksin.com/jewelry-books Buy Orchid Jewelry: ~ http://www.ganoksin.com/shop ____________________________________________________________________ -Unsubscribe: -Email: orchid-request AT ganoksin.com Body=unsubscribe subject=blank ____________________________________________________________________ |
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