@WillAdams wrote:
I'm afraid that this will be a bit of a cheat --- I'm going to try to crowdsource an understanding of this. Let's start by looking at all the variables:
Material being cut --- this should be groupable into a couple of categories, ideally matched up with typical endmill manufacturer recommendations:
- Hardwood
- Soft plywood
- MDF/Particle board
- Plastic (hard)
- Plastic (soft)
- Acrylic
- Metal (ferrous/non-ferrous), specific alloys and elements (are there any elements in their native form which are usefully machined?)
(from: http://www.pdsspindles.com/engineering-speeds more-or-less --- other useful suggestions would be welcome)
Machine type:
- Shapeoko 3/XL/XXL --- note the sub-variant issue of attached spindle (Dewalt, Makita, other) and possible speed range
- Nomad 883
(going to limit it to current production Carbide 3D machines)
Endmill diameter:
- 0.03125"
- 0.0625"
- 0.125"
- 0.25"
Number of flutes
Endmill material (carbide/HSS)
Endmill coating
Spindle RPM --- as part of this, filled in the chart: https://www.shapeoko.com/wiki/index.php/Materials#Router_Speed_Chart
Machine Feed rate (and plunge rate, which is often half or one-fourth of that)
Chip Load
Additional information which may be calculated:
- Surface Feet / Minute (SFM)
- Material Removal Rate (MRR)
I would like to fill in this post with additional information as it is found, puzzled out, derived or asked about.
Posts: 1
Participants: 1