Featurecam programmer $35-$38 per hour starting in Odessa Florida

Imachine909

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Not necessarily. I run many different materials, so tool pressure in nylon will generate a different dimension than in stainless or titanium. I might have to tweak it a few thou to get it running where it needs to be. Once things are up and running, my offsets are changed while parts are running. There's no downtime involved. My boss doesn't see what I do as risky because he knows I think it through before inputting numbers.



The parts I make are strictly for the products my employer assembles and sells. We do work in a job-shop environment because we run the jobs that either outside vendors couldn't complete in time or just refused to quote at all, but nothing we make is for other companies. Every part I make becomes part of an assembly, where tolerance stack up can create problems down the road. I deal with tolerances much tighter than the +/-.003" I wrote earlier, like +0/-.001 in plastics that will change in size with the humidity of the day. That has me planning on how to reliably hold +/-.0002" so the parts will still be in tolerance tomorrow or next week. These hoops I jump through make it easier for me to quickly hold tight tolerances in stable materials. I'm not known for blowing my own horn, but I am one of if not the fastest producers in the shop.
I really appreciate the insight to everything you sight. You make some good points. It changes a lot of things when you aren't sell machined parts vs selling a finished assembled product.

With the tight tolerance plastics can you change the size a measurable amount on say 1/2 diameter x 1" OAL in 30-60 seconds by holding it in your hand?
 

Charlie Gary

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I really appreciate the insight to everything you sight. You make some good points. It changes a lot of things when you aren't sell machined parts vs selling a finished assembled product.

With the tight tolerance plastics can you change the size a measurable amount on say 1/2 diameter x 1" OAL in 30-60 seconds by holding it in your hand?
Sometimes. It will only be a tenth or two, but you can change sizes of parts by either holding the part or the micrometer too long. I've made parts that were checked on a CMM that were undersized on a 4" I.D. until I set the part on a voltage transformer and warmed it up. I gave it back to the inspector (who was also the guy who was going to press a bearing into said holes) and he checked it again. It was within tolerance after warming it up about ten degrees. It helped him generate an acceptable inspection report.
 

Mhajicek

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"Aim small, miss small."

In general I like to run parts within about 1/3 of the tolerance zone; that way if something changes there's a much greater chance the part is still good. Also, when it's a first op including a datum, I try to make it dead nuts, since the next op depends on it.
 
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