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About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2016
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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Paint Brushes 101
Kirt's Cogitations™ #103

These original Kirt's Cogitations™ may be reproduced (no more than 5, please) provided proper credit is given to me, Kirt Blattenberger.

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   Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or reflection; meditation; contemplation.
   Kirt [kert] – proper noun: RF Cafe webmaster.

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Paint Brushes 101

Paint Brushes 101. The most predominant source of natural brush fibers is hog bristle or ox hair (from inside the ox's ear). Tampico fibers and badger hair are used to a lesser extent. Synthetic fibers, called filaments, are composed of nylon and polyester. China is the leading exporter hog bristle, or "China brushes," hence the name. Natural fiber brushes are best suited for achieving extremely smooth, glass-like finishes. Use synthetic filaments brushes for oil- and water-based paints. Excluding the myriad of artists brushes, there is an extensive selection of brush types at your local hardware store, including coarse and fine stucco brushes, ultra firm synthetic for hot and humid weather, angled trim brushes, long reach for ceilings, angled radiator brushes, sash, square-end, double-taper, and even auto enamel brushes (who does that?). Class dismissed.