====== Feeds & Speeds ======

  * :?: = Suggestion found on the internet

===== Aluminium =====

:?: "6065 is not good for milling, better use 7075"

  * [[https://www.cutwel.co.uk/milling/milling-cutters/aluminium-plastic-and-non-ferrous-milling-cutters/alu-power/yg-alu-power-hss-co8-1-flute-standard-length-slot-drill-el612-series|Cutwel 1-Flute]] 3mm, 20krpm, 1100mm/min, 0.5D depth, Vc(?) 188mm/min, fz(?) 0.055 mm/tooth
    * Or TL;DR: 100mm/min at 0.5mm DOC, 50mm/min at 1mm DOC.
  * :?: Cheap chinesse 3mm milling cutter. <250mm/min, 1mm pass
    * [[https://www.youtube.com/watch?v=VZw-DcXzCZo|Yomismo Elmio]] on YouTube
  * Cheap 0.5mm drill (PCB type)
    * Feed 50mm/min, 1mm peck, use a collet because it snaps due to the wobble in the chuck!

===== Perspex =====

  * Cheap 0.5mm drill (PCB type)
    * 5krpm, Feed 100mm/min, 1mm peck, use a collet because it snaps due to the wobble in the chuck, stop between holes to clean any melted plastic off the bit
  * [[https://www.cutwel.co.uk/milling/milling-cutters/aluminium-plastic-and-non-ferrous-milling-cutters/alu-power/yg-alu-power-hss-co8-1-flute-standard-length-slot-drill-el612-series|Cutwel 1-Flute]] 3mm, 20krpm, 100mm/min, 1mm depth


===== Nylon =====

  * :?: "Moderate speed, heavy ish feed. If it melts back down the speed, if its then happy, up the feed." [[https://www.practicalmachinist.com/vb/cnc-machining/references-milling-cutting-speeds-plastics-285808/|PracticalMachinist]]
  * [[https://www.boedeker.com/Technical-Resources/Technical-Library/Plastic-Machining-Guidelines]]

===== Acetal =====

  * :?: Polyamide 12mm with 1mm per layer, 600mm/min with 1/8" endmill
    * [[https://www.youtube.com/watch?v=IodIrjQx66A|Sergii Khudolii]] on YouTube

===== Mild Steel =====

  * :?: 3mm cutter, Pass: 0.25 mm Speed: 300 Feedrate
    * [[https://www.youtube.com/watch?v=lJ8TLMi56Ns|Yomismo Elmio]] on YouTube

===== Others =====

  * :?: Slitting of a 6mm hardened steel shaft using carborundum disc. Speed is 11,000rpm, fed by hand, with a 0.25mm feed rate per pass. 

===== Engraving =====

  * It is important to obtain an engraved depth of .035” (0.9mm) for paint fill - source https://www.jpplus.com/pro-color-fill?sku=SUS052-EA