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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.

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

Smith Chart™ for Excel
Smith Chart™ for Visio
RF & EE Symbols Word
RF Stencils for Visio

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