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The dimension for each hole should be from the same datum not the previous hole? Then your tolerances don't stack or to keep the discrepancies from stacking. So each hole is only .0064 off and not building up to the .64 at the end.reible wrote:I can see from the posts here that it is really unclear what the issues are. Simple conversion to/from mm to inches is not an issue. Heck even google does that. Just start like this:
Then once you are there you simply keep going with any and all conversions you wish.
The bigger problem is if you want to make say a template that will allow you to duplicate a part done in mm. Here is a simple example:
Now if I simple convert this to imperial dimensions this is what it would look like:
Now if one has a tool that can snap to 1/32" such as an Incra positioner you could then produce something like this:
Now if we look at just one of the adjustments, 1-3/16 (1.1875) which should really be 1.1811 it is only off by .0064". Granted that doesn't sound like much and is isn't much until you attempt to make a set of 10 more holes it is then off by .064 which is just slightly more then 1/16" and that is not acceptable.
Does that make more sence?
Ed
Skizzity wrote:The dimension for each hole should be from the same datum not the previous hole? Then your tolerances don't stack or to keep the discrepancies from stacking. So each hole is only .0064 off and not building up to the .64 at the end.reible wrote:I can see from the posts here that it is really unclear what the issues are. Simple conversion to/from mm to inches is not an issue. Heck even google does that. Just start like this:
Then once you are there you simply keep going with any and all conversions you wish.
The bigger problem is if you want to make say a template that will allow you to duplicate a part done in mm. Here is a simple example:
Now if I simple convert this to imperial dimensions this is what it would look like:
Now if one has a tool that can snap to 1/32" such as an Incra positioner you could then produce something like this:
Now if we look at just one of the adjustments, 1-3/16 (1.1875) which should really be 1.1811 it is only off by .0064". Granted that doesn't sound like much and is isn't much until you attempt to make a set of 10 more holes it is then off by .064 which is just slightly more then 1/16" and that is not acceptable.
Does that make more sence?
Ed
Edit: Doh. Incra positioner(precision adjustments to .001).....not the right tool then?
DITTO, GARYS !garys wrote:I don't have that problem. I simply do not do metric. My old brain is calibrated in inches, not millimeters. I'm too old to change, so any project set up metric isn't going anywhere with me. Either it is in inches, or it doesn't exist in my world.
It is only a problem if you let it be a problem.
I never build anything from patterns or instructions anyway, so I don't encounter that problem. I build from ideas in my head where metric doesn't exist.
Can it change acres into hectares?JPG wrote:My metric converter. And a few extra thingies.
Only if I program it to divide by 2.741.charlese wrote:Can it change acres into hectares?JPG wrote:My metric converter. And a few extra thingies.
I had this same one that I used all the time at work. When I retired it came home with me but about 2 years ago it up and died. If I'm remembering right it took 3 LR44 batteries........ and they lasted a long time. Very different then the TI one I had before that, that thing ate batteries. Just trying to remember what year I got it, maybe about 1988 or 89 when I was taking some classes on the company dime and they got the calculator for me too.JPG wrote:My metric converter. And a few extra thingies.
