Here is a list of all the postings Dave Halford has made in our forums. Click on a thread name to jump to the thread.
|Thread: Building Stand|
You could use a £50 Clarke engine stand and bolt a custom fit cradle for your engine to it
|Thread: Cheap Milling Vice Question|
They are bigger than you envisage
|Thread: Quality Problems With the Sieg sx2.7|
I can leave it this way and ignore the fact that I have a play in the head of 0.2 mm which I can not fix since the gib will not go any further and if it did I will lose even more travel of the head (at the top) and I will have to live with the fact that the quill is not parallel to the head.
If this was an old style gib with screws every 50mm to adjust the play, then being tight at one end would imply the wrong adjustment and would possibly tilt the head.
Don't wedge gibs require equal adjustment at each end?
Drill chucks tend to have quite a wobble and add their own random error when you turn it or re chuck something.
Do not use any milling cutters on that without a proper cutter holder
|Thread: fly cutter wear|
You need a milling rated insert for interrupted cuts
HSS is HSS it shouldn't be 'a bit soft' unless you have some old school tool steel that needs hardening and tempering.
Serious wear on that, might be rubbed to death. Have you tried faster feed?
Cutter should be parallel to the holder base. Are all three screws tight?
Grind that flat completely off.
|Thread: Anyone recognise these.|
All for the mill
Two APKT type insert cutters, one radius cutter, one bull nose and lastly a 45deg for truing your lathe tailstock etc or a counter sink
|Thread: What sort of light source to use a strobe disc?|
Tube if it's a 50Hz disc
|Thread: Vacuum Pump Advice Please!|
You've not said the vanes are free to move? beaten to it
Below near the base is a plastic screw screw cap covering a felt pad with access to a chamber filled with coarse fibre: could be a filter, or an oil pad. Anyone know if this is the oiling point?
This sounds like to be an oil trap for the bearing breather, perhaps to stop it pumping all the oil out.
It's a lab pump link
Edited By Dave Halford on 24/09/2020 17:30:16
|Thread: Quality Control ?|
How come you don't end up with just the ring pull dangling from your finger?
|Thread: Climb Milling any implications|
Climb milling tends to drag the work in, in other words it can self feed. Standard starts with a slight rub and opposes the feed.
Edited By Dave Halford on 24/09/2020 12:35:53
If those tips came with a 4 piece under £20 CCMT set you can get CCGT from the same source. They make a huge difference.
|Thread: Climb Milling any implications|
It's easy to find on the web
|Thread: Covid causing mental health issues.|
The Yorkshire mills were recruiting all over the country. They went to Bradford the same way Jeremy Paxmans family did when they left Suffolk, on an organised trip to an organised job.
|Thread: Creating negative pressure in flue?|
Have you considered the carbon monoxide might get you if you do it wrong.
|Thread: which older mill to complement a ML7?|
The Raglan is too fast for gear cutting with the common 3" dia cutters.
The spindle is fixed
The belt is around £50 and make sure all the speed change parts are present.
To CNC convert will require a stepper capable of lifting the knee.
There's nothing to blow up or plastic to break.
Chinese spares come from parts machines that the importers dismantle, so availability is not what you expect, if a new version comes out, 'spares' run out quite quickly.
Edited By Dave Halford on 21/09/2020 14:30:26
|Thread: 1" Minnie boiler stays|
Why is that Clive? Torch breathing trouble?
|Thread: Left Hand Milling Cutter|
Thats when you need a key otherwise the nut comes undone
|Thread: Myford super7 motor U/S|
The cap might have black stuff leaking out, that means it's dead. Some lathe suitable motors are cap start some are cap start & cap run (there are 2 values of cap on the motor plate) buy the right replacement.
The centrifugal switch is in the wiring end cap.
Check the winding air passages are clear of rubbish like plastic swarf before you reassemble.
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