Research Project: Using The Right Bit For The Job

I started this post because I am coming to the end of the life of one of my end mill. I have burnt out the bit a number of times using MDF and the cutting edges are now dulled. This lead me to purchased a set of cheap(ish) tools which I am looking to get the longest life possible from. So, time to do things properly! This is a research project in itself which would lead to a blog post in the subject area (which can be found here: Making the Cut: Tool Speeds, Bit Types and Feed Rates) and a plan of action (below).  I will still keep the bit as I will be researching into methods or reviving and sharpening at a later date.

Aim:
Cut a pocket in the lid of the CNC machine to house the PSU completing the machine to MVP standard.
Problem:
Bit too small for pocket, too blunt due to burn out / abuse during the lifetime of the project build. I do not know what rpm or feed rate to cut at and at what depth..
Solution:
Purchased new carbide bits but now need to figure out the correct feed rate, material removal volume and tool speed needed but with a focus on maintaining tool life.

Gasea 8pcs 1/4″ Shank Straight Dado Router Bit Set Milling Cutters Bits

bits1

Feature:

Blade Industrial grade micro grain carbide. Hook & Shear Angles High hook & shear angles allow cutters to slice smoothly into stock producing clean, splinter free. Coating Baked on heat-resistant coating prevents build-up of sawdust, resin, and pitch. Sharp edge, accurate positioning, smooth cutting. High strength and hardness. High abrasion resistance, impact resistance. High precision and high toughness. Suitable for MDF, solid wood, MDF, particle board, plywood, wooden door frames, wooden window frames, cabinets and boxes etc. Used on turning lathe machine, can be used to processing wood.

Specification:

Material: Medium carbon steel + alloy. Color: Silver. Shank Diameter: 1/4-Inch Shank. Cutting Diameter: 22.2mm / 15.9mm / 12.7mm / 9.52mm / 7.96mm / 4.76mm / 3.96m/ 3.17mm. Cutting Length: approx. 10-25mm

Package Included: 8 x Router Bits

Method:
Research into these areas and come up with a plan of action.

Plan of Action:

After the initial research I am planing on programming a small javascript tool that will sit on my site that I and others can use to calculate the ball park speed and feed rates to use.

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