Too much error!

• fudgester

  6 Feb 08, 08:36

  Yesterday two new custom-made stainless steel springs for my final year project experiments arrived.

  I requested them to have an external diameter of16mm with tolerances of -0.3mm and +0.1mm. In short, any external diameter between 15.7mm and 16.1mm would be acceptable to me.... anything more or less than that would cause too much error.

  The springs arrived and I measured them with vernier calipers..... the external diameter was 16.67mm.

  That error is too large for me.... now I have to reorder and wait two weeks for them to arrive.

  #$^%$#*@.......

• laurence82

  6 Feb 08, 09:08

  engineers

  pffftt

• fudgester

  6 Feb 08, 09:09

  Bananas.

  Pffftttt.

• StarPuppy

  6 Feb 08, 09:09

  wah...i did precison engineering as a part time work

   

  once u are used to doing such stuff..difference of 0.02mm is very clear

   

  wonder how could they make such a big mistake of .67mm?

   

  maybe u order from somewhere else

• laurence82

  6 Feb 08, 09:10

  scientist

  pfffttttt

• StarPuppy

  6 Feb 08, 09:12

  ah lua

  pffftttt.

• laurence82

  6 Feb 08, 09:14

  in precision engineering, that would be shoddy workmanship right?

   

   

  pup, miss u sia

• fudgester

  6 Feb 08, 09:15

  Originally posted by StarPuppy:

  wah...i did precison engineering as a part time work

   

  once u are used to doing such stuff..difference of 0.02mm is very clear

   

  wonder how could they make such a big mistake of .67mm?

   

  maybe u order from somewhere else

  I'm not asking for such a high precision of 0.02mm.... else the springs would be very expensive.

  As it is tolerances of -0.3mm and +0.1mm are already pretty loose in my opinion.... pretty pissed that they could make such a large error.

• StarPuppy

  6 Feb 08, 09:23

  Originally posted by laurence82:

  in precision engineering, that would be shoddy workmanship right?

   

   

  pup, miss u sia

   +/-0.01 to +/-0.1 range is is very clear who are in this line

   

  u got giga boy..miss me for wat

   

• StarPuppy

  6 Feb 08, 09:24

  Originally posted by fudgester:

  I'm not asking for such a high precision of 0.02mm.... else the springs would be very expensive.

  As it is tolerances of -0.3mm and +0.1mm are already pretty loose in my opinion.... pretty pissed that they could make such a large error.

  can u go to others?

   

• fudgester

  6 Feb 08, 09:29

  Originally posted by StarPuppy:

  can u go to others?

   

   

  Well, I only know of a couple of companies that can custom-make small orders of springs.

  Oh well.... at least my department is footing the bill.

• StarPuppy

  6 Feb 08, 09:42

  due to the company mistake, is your deadline pushed back?

• BangHong

  6 Feb 08, 09:54

  The mistake really like quite serious, what are the 'higher-up' comments?