Here is a list of all the postings Capstan Speaking has made in our forums. Click on a thread name to jump to the thread.
|Thread: drilling in spring steel|
If you heat spring steel it won't be springy at that point any more.
Perhaps it might "dremel" out?
|Thread: Keeeping Machines Clean, New idea or Old?|
Lots of valid points. If you look after your kit it will look after you. A good craftsman will keep his space to the same standard as his work.
Everyone who has a choice sets their own standard but it's not a showroom or a pig sty.
A benefit of an occasionally grubby machine is that you have evidence to show the misses for why you spent all that money.
Plus it discourages her from trespassing in the mancave. Bonus number two.
Ok if your swarf is cold. However a long swarf trail might snag it and drag it in. Nasty.
Eee wen I wurr a lad we ad ta clean down for the next shift every time.
|Thread: drilling in spring steel|
The machine is more than fast enough for heat treated spring steel even at that diameter. You might want some suds but not oil as spring steel is prone to glazing, a form of work hardening the surface.
How does a person guess the load? A kilo?
|Thread: Taylor Hobson cutter grinder.|
An accessory for sharpening engraver tips for one of their pantograph machines
|Thread: Tailstock ate my spindle|
Is it the screw or the quill that goes tight?
A misaligned or damaged clamp cam or tenon ?
Can you remove the handle and slide the quill out?
|Thread: Brushed or brushless?|
Brushless motors are synchronous and brushed are not.
Frequency speed control is superior to pulse width modulation but as a hobbyist you'll get the job done either way.
I wouldn't base a purchasing decision on such a minor refinement alone.
|Thread: How to? Help|
Seconded. Without the proper kit, a 12mm bar with a cross-hole, tool bit and a pinch screw. Clumsy, tricky but cheap and simple. It's no jig borer but it could be decent with care.
|Thread: Pounds/foot (and other nonsense) MEW 226|
You missed the "per minute," chap ;o)
"If I were to tell you that the result of experiment was 15 pound-feet can you tell me what that answer means?"
Since it's a multiplication there is absolutely no difference which way it is written or pronounced.
A x B = C and B x A = C so footpounds or poundsfeet are the same.
footpounds is a quantity of force.
1 foot pound per minute =0.0225969658 watts
As I said it can also be a unit of energy. It is sometimes written as foot-poundal and can be converted to Joules.
Force, energy and power are the basic principles of mechanics and electrics
Edited By Capstan Speaking on 02/03/2015 14:53:49
Foot pounds is a measure of force in a radial direction aka torque.
0.5 pound at 2 feet is still 1 footpound. It is a multiplication sum and represents a fixed overall value. It often has a dot between them.
Horsepower equaling to ft.lbs/min or torque applied for a period of time is a rate of energy transfer (work done) as is always the way with power.
Now then footpounds is also an old term for a quantity of kinetic energy and is still used accross the pond in relation to ballistics.
One pound travelling at a speed of one foot per second has 1 "foot pound" of kinetic energy.
Have I made it clearer or murkier? ;o)
|Thread: Setting bearing preload.|
I used to be a Toolmaker at British Timken (RIP).
Counting turns will vary with the thread pitch. The proper procedure is to measure the static torque via a spring balance on an arm.
The shortcut is to nip it until there is the faintest drag when turning by hand. Lock it there or if you have a castle nut then back off to the first split pin slot.
More sophisticated set-ups may have spring shims.
|Thread: Cheap Tools ........ Grrrrrrrr.!!!!!|
Well on the positive side you have a new project to make a new spindle
Silver steel should do nicely. Just harden the tip.
|Thread: Stubs or Silver Steel|
It is possible to get 1.5mm dowel pins and below. They are already hardened too.
|Thread: Cheap milling machine light|
Machine Mart do a proper "Angle Poise" type lamp for £15 and a magnifier for £20.
|Thread: Which chuck to buy for first lathe ?|
Can I through a little more mud in the water?
I used to use a 4-jaw for holding hot-rolled, forged or cast items to protect the accuracy of a 3-jaw while the rough skin was taken off.
A 3-jaw is for convenience and mounting speed which is far less important in a hobby environment. Also 3-jaws allow for the use of soft jaws which have a myriad of uses in the professional environment.
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