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Thanks Jim. One last question for now. Do you use GD&T for everything you design, or just machined items? I had a quick look at the closure details on your website and noticed a different dimensioning style. We design a lot of plastic injection moulded parts, and I was wondering if GD&T was...

In this case the holes are screw holes for mounting another part. Exact alignment of the other part is not critical, so no alignment pins are used.

Thanks everyone for your feedback! Firstly, apologies to you all for the large JPEGs in my post - please put this down to me being a first timer. MechNorth, thanks for all your feedback and the sample you posted. This is exactly what we needed to see, and as you say it takes a lot of studying...

Thanks aardvark. I've uploaded the files to tinypic. Our current standard for dimensioning symmetrical details about a centreline is this: One approach I'm considering is this: I welcome your feedback everyone, thanks. Ant77

OK. So my biggest problem with our current office drawing standard is the way we dimension symmetrical parts. I have created a PDF document showing how we currently do it, and how I 'think' it could be done. How do I post the PDF to this group for review?

Thanks all. As one of you pointed out, examples in standards can be quite detached. To get the full picture you really need to see, well, the full picture! Yes, I would like to put a drawing before my other CAD managers and say "here is a drawing done to Y14.5M" and review it as a whole. I...

Hi all, I'm looking for a good sample part drawing done to Y14.5M. Can anybody supply a drawing, or show me where I can download one? Thanks, ant77

Thanks for all your tips on this shaft. As always there seems to be a balance between representing your original design intent on the drawing, and describing the part for manufacturing and checking. I have heard of some companies overcoming this by producing 2 drawings for each part, or...

I'd be very keen to get anyone's feedback on the latest version of the drawing. It is posted as a pdf at: http://makeashorterlink.com/?F575168AC Thanks and regards, Anthony

Heckler. Understand from what you're saying that the primary datum (a) should be the axis of the shaft, and the secondary datum (b) should be the datum I'm currently showing - thanks. The datum I've attached to the 77 dimension refers to the centerplane of the 77, not the face of the e-clip...

Thanks for your reply ctopher. I think my use of the word 'centerline' was a bit misleading. I am not concerned with the diameter of the shaft, but rather its length. The centreline is not the center of the shaft, but the center of the c-section it fits in to. The shaft extends a little...

Hi all. I am new to GD&T and need your help setting up a simple drawing for a shaft. The 6.0mm diameter shaft is held in an extruded C-section by two e-clips, both inside the 'C'. As a result, the e-clip grooves are symmetrical about the centre of the extrusion. Two other e-clips lie...