As a newcomer to our hobby and with little practical engineering experience I was filled with both trepidation and eagerness in equal measure to jump in and get started. One of the challenges to setting up a workshop is identifying suitable machinery and I soon found myself hankering after a milling machine. Without wishing to spend a fortune, my options are limited to the pre-owned market which brings its own challenges.
I had the good fortune to find a Tom Senior M1 in well cared for condition and as far as I can tell, light previous use. As is the case with older machinery, some of the “bells and whistles” we rely upon are not available. Unfortunately, experience is acquired over time and having broken several cutters, it was suggested by a retired toolmaker friend that I may be running the mill too slowly. Hence this project was born, to set correct rotation speed according to size of cutter and material being machined
Photograph 1 shows the finished display clip mounted on the Digital Readout (DRO). I also wanted the end result to be aesthetically pleasing and in-keeping with the DRO I am installing (which may be the subject of another article) but at the same time be easily differentiated so I chose the Blue display to contrast with the Red DRO display.
This modification is inexpensive, is a quick project to build and delivers valuable information to the operator. Only basic soldering skills and a few readily available parts from either your spares bin or online are required, the display case can be made from offcuts, or if available, 3D printed which is the route I took.
The project can be re-purposed to any other machinery where rotation speed needs to be determined.
Denne historien er fra December 2019-utgaven av Model Engineers' Workshop.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent ? Logg på
Denne historien er fra December 2019-utgaven av Model Engineers' Workshop.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
Readers' Workshops - Patrick Cubbon
Patrick Cubbon describes his workshops – a portable one from 1963 and the current accommodation
Desktop Gear Hobbing
Toby Kinsey has designed this fascinating piece of gearmaking equipment
The John Stevenson Trophy 2020
Many readers and forum members will remember John Stevenson, a contributor to MEW but best known for his larger-than life presence on the Model Engineer forum.
From the Archives: Twist drill Sharpening by the Four Facet Method
Giles Parkes, MEW Issue 64, February/March 2000
Dividing on the Warco 220 Lathe
Peter Shaw describes a mandrel dividing attachment for this popular lathe that can be adapted to fit many other benchtop machines
Choosing Steels
Stub Mandrel offers some advice on choosing the right steel for the job
A Storage Story
Robin King shares the lessons learned from his experience of workshop moves
A Simple Drill Grinding Aid
A newcomer to our hobby was having trouble sharpening drills, so Howard Lewis made a simple aid for him
Yet Another Bodge-Up!
Peter Shaw finds a use for some aged homebrew slot drills.
Workshop Press Tooling Part 2
Will Doggett makes a set of tooling for his press tool described starting in issue 285