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| Blob lap page |
| A Hacksaw blade produce s quick microchannels. Just make sure you repress a bit |
| Keeping the pitch a constant temprature is important for even hight blobs. Heat the pitch to around 180 degrees. Some suggest putting the pitch in the oven to warm it, I use the stove. A metal spoon works best to pour the blobs. Just figure out what size blobs you want and spoon them on. I try to prop up the side of the tool I am pouring about 1/4" but it works without doing that also. If you get some strings from the pitch dont worry they are not a problem. Just clean off any loose ones. |
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| Sub diameter lap. The masking tape on the edge protects the mirror. After pouring my blobs I warm the lap with warm tap water and press. Repeat as nessasary. If this would have been a full sized lap like the one below I could have made it a smaller lap by just removing the outer tiles with a sharp scraper. |
| Outer blobs can be added or scraped off as needed. Just keep pressing for good contact. By selective removing of edge blobs you can have star like laps easily |
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| This is how I make my pitch laps |
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| Start with a clean tool surface. I use tile tools. This Tool was covered in pitch blobs about 5 minutes before this picture was taken. I put the lap in a bag and use a sharp putty knife to remove the pitch and then wipe off the exess with turpentine. Just prior to pouring the pitch I heat the tool under hot tap water, dry it, then wipe it with turpentine. To melt pitch, put your pitch in a bag and bust it up into smaller chunks so it will melt faster. Heat it over low heat stiring now and then. |