View source for Function 4

==Links &amp; Show Notes==
===San Francisco Pen Show===
* [http://www.sfpenshow.com/ San Francisco Pen Show]
* [https://www.penaddict.com/ The Pen Addict]
* [http://www.erasable.us/ The Erasable Podcast]
* [https://www.evilmadscientist.com/ Evil Mad Scientist Laboratories]

===Art and Design Books===
* [https://www.amazon.com/House-Industries-Process-Inspiration/dp/0399578102 House Industries: The Process Is the Inspiration]
* [https://www.kickstarter.com/projects/1993782747/lance-wyman-the-visual-diaries-19731982 Lance Wyman: The Visual Diaries 1973—1982]
* [http://blogs.bl.uk/digitisedmanuscripts/ Medieval manuscripts blog]

===Pencils===
* [https://www.amazon.com/dp/B072JCL6MH/ref=asc_df_B072JCL6MH5202079 Mobius + Ruppert (M+R) POLLUX Brass Pencil Sharpener]
* [https://www.amazon.com/Pentel-0-3mm-Mechanical-Pencil-Barrel/dp/B000WH2WSO Pentel P203]
* [https://palominobrands.com/blackwing/ Blackwing Pencils]
** Blackwings really aren't all the same hardness! I have made more measurements since then.

===Pens===
* [https://www.gouletpens.com/jinhao-fountain-pens/c/80 Jinhao Fountain Pens]
* [https://www.amazon.com/Koh-I-Noor-Rapidograph-Stainless-Steel-Artists/dp/B001J5MBKW  Koh-I-Noor Rapidograph Stainless Steel 7 Pen Artists Set]
* [https://www.amazon.com/Kaweco-Liliput-Fireblue-Pocket-Fountain/dp/B00WX7YMRU  Kaweco Liliput Steel Fireblue Pocket Fountain Pen - Medium Nib]
* [https://www.amazon.com/Crayola-58-7858-Ultra-Clean-Washable-40-Count/dp/B013RQPB5C  Crayola 58-7858 Ultra-Clean Washable Broad Line Markers, 40-Count]
* [https://www.amazon.com/Pilot-Parallel-Calligraphy-Cartridges-90050/dp/B002RJNT46  Pilot Parallel Pen 2-Color Calligraphy Pen Set, with Black and Red Ink Cartridges, 1.5mm Nib]

===Ink===
* [https://vanness1938.com/products/kwz-standard-theifs-red KWZ Standard Thief's Red]
* [https://vanness1938.com/products/kwz-standard-grapefruit KWZ Standard Grapefruit]

===Plotters===
* [https://axidraw.com/ AxiDraw]
* [https://en.wikipedia.org/wiki/Graphtec_Corporation Watanabe Instruments]
* [https://www.amazon.com/HHIP-4401-0011-Granite-Surface-Plate/dp/B01BHHXVA0 HHIP 4401-0011 Granite Surface Plate, Grade B, Ledge 0, 12" x 9" x 3"]

===Paper===
* [https://www.amazon.com/dp/B002QRO1B4/ref=asc_df_B002QRO1B45202322 Rhodia &#8470;18 Staplebound NotePad 8.25 x 11.75-Inch (18000C)]

===Watercolor light fastness===
* [http://handprint.com/HP/WCL/wpaint.html Paint testing]
* [https://www.handprint.com/HP/WCL/waterr.html Red lightfastness]

===Electronics===
* [http://www.lamptech.co.uk/Spec%20Sheets/LED%20Monsanto%20MV1.htm Monsanto MV1 LED]
* [http://www.tubebooks.org/tube_data.htm Vacuum tube data sheets]

===Plastics===
* [http://www.pencilpages.com/articles/simmons.htm Pencil hardness test]

===Software===
* [https://inkscape.org/en/ Inkscape]
* [https://www.w3schools.com/xml/xml_whatis.asp XML]
* [https://www.evilmadscientist.com/about/ Inkscape driver writer]
* [http://www.linear.com/designtools/software/ LTspice]
* [https://www.perl.org/get.html Perl]
* [https://www.python.org/ Python]