"If in doubt, ask"

I'm proud of myself. Tonight I finished a part that I'd been working on for
just over a week. Within half a thou in diameter, a couple of tenths taper
over its length. and within half a thou of 9/16" too bloody short.
I blame the oxygen thief that did the drawing and I have re-done my drawing as
penance.
Oh well, start again tomorrow.
Mark Rand
RTFM
Reply to
Mark Rand
Loading thread data ...
Measure twice cut once...
Tom
Reply to
Tom
Makes you want to think of a way to use it. Maybe incorporate it into some jig or fixture - and then many years later people will be wondering why the hell you made it in such a strange way.
Steve
Reply to
Cheshire Steve
That's daft. It means you have two scribed lines that are wrong instead of one
Cliff Coggin.
Reply to
Cliff Coggin
Scribed? Whatever happened to chalk?
Tom
Reply to
Tom
Commiserations Mark, I know the feeling well. No matter how careful you plan the task, the execution often just slips past the perfection you strive for. Each time it happens to me I resolve to avoid it happening again. But it still happens. I am going to ask Father Christmas for an extra large ( about 1 litre should last a week) can of super strength RESOLVE and then see what happens. Regards Alan
Reply to
jackary
from Mark Rand contains these words:
This brings back memories of a week in my apprenicship - about 1958. I'd had a number of 'mishaps' in my second week in the milling department and the foreman gave me a 6 inch length of 1 1/8" x 1 1/4" material that needed a 1/2" x 1/4" slot milling along the length in the 1 1/4" wide side saying "Are you sure you can get this right?". I responded "How could I not?" or some such . . . . .
You will already have guessed that I put the slot in the 1 1/8" face :(((
JG
Reply to
JG
Sometime in woodworking, measurements need to be more accurate than usual.
Since woodworking tapes have "slidy things" on the ends, a common trick is to measure from the last inch mark (not the tip), to improve accuracy.
So, of course, I marked and cut a piece which was accurate to around 1/64" inch, apart from being 1" too short.
BugBear
Reply to
bugbear
Don't they always tell you shouldn't drink and work? And SOLVENT also isn't good for your health when you drink it. But it's OK that you mis-spelled it. :-)
Nick
Reply to
Nick Mueller
Hi Tom, May I add to 'measure twice , cut once.' ; Read drawing three times, measure twice and then cut once. Unfortunately the voice of experience! I made something exactly to size, only to discover it was the wrong exact size. Altzheimers again? T.W.
Reply to
the wizard
That may be closer to it. I had read a dimension off my drawing as the total length, when it was the length part of the component. That's the good thing about doing things for yourself. You know who to blame when things go wrong :-)
Mark Rand RTFM
Reply to
Mark Rand
I have a friend who made a nice job of replicating the Myford spindle nose. Anyone know a use for one with a left hand thread!
Henry
Reply to
Dragon
Then there are those cheap sods that break off the end of their tape, and rivet the hook back on, a few inches up....:-/
:-)
Cheers Trevor Jones
Reply to
Trevor Jones
Drawing? You have drawings? Isn't that gilding the lily somewhat? What's wrong with the ole stick n dirt floor for design?
Tom
Reply to
Tom
snip...
A few years ago my REMAP panel had a large project that required a small team of people. One of the team didn't have a workshop, but did have a CAD system, so he produced the drawings. Lots of them. With dimensions shown to 0.001mm! One of the constructed parts didn't fit. It was found to be 1" too big, but accurate to 0.001mm.
Reply to
lemel_man
Must have wanted to use a tailstock chuck :-)
Mark Rand RTFM
Reply to
Mark Rand

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.