Here is a list of all the postings Martin Kyte has made in our forums. Click on a thread name to jump to the thread.
|Thread: recent power outage in Medway|
My comiserations Clive. Maybe Machine Mart is a good place to start, they are always banging on about their heater range.
It's either that or build a forge or foundrey and move in there
Well yes actually I think you can. Essentially if you strip electrons from atoms in a gas you get a plasma. The atomic neuclii and whatever electrons remain associated with them retain the characteristic identity of the particular element you started with in terms of atomic number.
|Thread: Arduino/Stepper Motor Dividing Head|
Microstepping increases the resolution of the system. Torque between full steps is less so positional accuracy due to system stiction gets worse between full steps. Your last point on speed I don't agrree with. Gecko Stepper drives switch from microstepping at low seeds for resolution to full stepping at higher speeds for more torque.
|Thread: Learn to use a metal lathe|
One of my favourite phrases is 'we learn from mistakes, but no-one says they have you be your own mistakes'.
I'm with Andrew on this glean as much as you can from books and other people. You will still make enough errors yourself.
|Thread: The Fount Of All.... Hignorunce?|
It's about asking the right question.
Try "How to splice rope"
rather than "Rope eye splices"
|Thread: Doncaster Model Railway Show.|
Alley Pally is not the only London venue. The London Model show moved there from the Lee Valley Leisure centre so historically it's not wedded to alley Palley.
I guess everything will go through a period of adjustment including venue's trying to attract custom by adjusting hire prices.
I'd go with that comment. A lot of the shows live hand to mouth from one show to another. Lay out the money and have the show cancelled or poorly attended because of a new wave of covid and restrictions and you could well destroy the chances of being able to run ever again. It's a case of do you take the risk or not or so it seems to me.
|Thread: Arduino/Stepper Motor Dividing Head|
For a microscope stage driver you may be interested in this.
It's an open source sub-micron stage driver based on an arduino interfaced to a Games controller handset.
I built one for the Lab 2 years ago as a low cost microscope stage controller and it works very well.
I built a dividing head driver just for cutting clock wheels. My interface consists of a 4 digit 7 segment LED display with an SPI interface. Didn't bother with a keypad. Just had a toggle switch to select set or run mode and 2 buttons for increment or decrement when in set mode. Single pushes change the target count by 1 and holding the button auto increments. Quite quick to set up. I use a PIC to run the firmware. The system keeps an absolute count of the number of steps and calculates the next step count for each division to eliminate cumulative errors.
|Thread: Read the T-shirt|
I Like this one.
Edited By Martin Kyte on 08/02/2022 08:41:16
|Thread: Gear cutters for clock wheels|
Using the analogy of a buttercup flower where the tapered sided button is the 'cup' and the waist is the much smaller 'stem'. If you drill your locating holes on the mill they can be located with precision using the dials or DRO.
Well thats an interesting twist. You are a little limited on diameter with that method. What's wrong with turning tapered buttons in silver steel. With a parallel waist they can be accurately positioned in holes drilled in the end of the button holder, whitch is put in on the mill will correctly separate two buttons to give the correct thickness to the gear cutter. High Strength loctite to cement in place means that you don't loose the polish on the buttons as you don't have to apply heat to silver solder them in place.
|Thread: Running a Myford S7 in Reverse|
You ask is there another solution, well you could always convert to left hand threads if you are screw cutting internal and external mating halves.
|Thread: New highway code rule.|
One of the knotty questions is does the robot car choose to run over the child in the road killing it or swerve into the bridge parapet killing you. Does the manufacturer have to obtain your signiture for this action to be allowed or can it be programmed in without your consent and if so what are the rules on disclosure.
|Thread: Green growth on car roof rails|
If it's green then it will be photo synthesising so reducing the light may slow things down a little. Try painting it with a solvent like IPA or maybe try one of the mould killers sold for bathrooms.
Edited By Martin Kyte on 06/02/2022 16:17:06
|Thread: Hand Held Magnifiers?|
Take a picture with your phone.
|Thread: Non-warping Wood for Base?|
I'll second that for old furniture. Once you have your finished size then it needs to be completely sealed (shellack polish etc). Alternatively use Trespa high pressure laminate. Pleasant to look at can be machined with a router to create the edge. Totally stable and dead flat. Link is just for an example.
|Thread: Making a die filer - how to build the eccentric|
Have a squint at the Hemmingway Kit at
I buit one and it works very well. Designed to fit on a Myford and be driven by the chuck. The table is adjustable for angle and the stroke length can also be adjusted. Essentially the file is attached to a slide whitch is driven by a crank. No bearings are required for the "big end" as that is taken care of by the headstock bearings. Similarly the motor and speed control are built into the lathe, in my case a variable speed drive as I have a Newton Tesla inverter drive on mine. Lathe mounting also takes care of, well mounting actually, and so the unit ends up at the right sort of hight and is rigidly constrained. I have to say, whats not to like. By all means do your own thing but it's a hard act to beat. The only criticism I have is that the file travels in a straight line so rubs on the back stroke. Hard to get a machine to do anything else really. You really should mount your files upside down in a unit like this so they cut on the down stroke and against the table for heavier work.
I have used mine for wheel crossing but like most thing horological everyone thinks there are short cuts but in the end practicing hand methods end up faster in the end.
|Thread: Four Index Thread Indicator|
Top and cross slide are irrelevant. The leadscrew needs to be metric for dial indicators to work for metric threads. You cannot drop the half nuts in anywhere else on an imperial lead screw when cutting metric threads. Even for imperial threads if you are doing strange TPI's it is sometime neccessary to keep the half nuts engaged.
I wanted to know if there is a dial indicator for metric threads?
Yes but only for lathes with a metric lead screw.
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