Thank you for the comment! We do have plans to update our SW version this year and we will make sure to release an updated video showing the ins and outs of the new user interface.
What basic dimension locates your 4 hole pattern relative to B and C? You have the basic square spacing of 4 inches but seem to be relying on an implied symmetry. Rather than choosing B and C as edges, you could have applied them to the overall width and height dimension thereby establishing them as center planes and located the hole pattern relative to the true center of the part. Seems like a missed opportunity. Nonetheless, thanks for posting.
Thanks for the question, you have a great understanding of GD&T. You are exactly correct, we are relying on an implied symmetry which is allowed in the ASME Y14.5 -2009 standard. The implied symmetry along with the with the centerlines being basically dimensioned back to the datum features allows the 4-hole pattern to be basically located and True Position to be established. As far as choosing the features to be used as datums, that is left up to how the part assembles with the rest of the assembly. So IF being located to the center of the part is more important that being located to the edges, it would have been better to do exactly as you stated. Thanks for your input!
Is there any reason you started using +/- feature of size dimensions instead of calling out profile tolerances on certain features? For the .750+/-.010, why wouldn't you call out something like ".020 Profile Tolerance with Respect to Datum Feature A"? - I guess maybe you care about the thickness more than where the surface is located? Size vs surface tolerance?
You are absolutely correct. Dont forget that Rule # 1 would also control the feature of size to its envelope at MMC. However, we could have changed that .750±.010 dimension to a basic dimension and added a profile control to the controlled surface. For this example we were trying to exemplify as many different methods as we could.
nice video
Do you have an updated version with SolidWorks 2022? They changed the GD&T --which is not as easy or intuitive :(
Thank you for the comment! We do have plans to update our SW version this year and we will make sure to release an updated video showing the ins and outs of the new user interface.
Is there a way I can download this part file thanks In Advance.
What basic dimension locates your 4 hole pattern relative to B and C? You have the basic square spacing of 4 inches but seem to be relying on an implied symmetry. Rather than choosing B and C as edges, you could have applied them to the overall width and height dimension thereby establishing them as center planes and located the hole pattern relative to the true center of the part. Seems like a missed opportunity. Nonetheless, thanks for posting.
Thanks for the question, you have a great understanding of GD&T. You are exactly correct, we are relying on an implied symmetry which is allowed in the ASME Y14.5 -2009 standard. The implied symmetry along with the with the centerlines being basically dimensioned back to the datum features allows the 4-hole pattern to be basically located and True Position to be established. As far as choosing the features to be used as datums, that is left up to how the part assembles with the rest of the assembly. So IF being located to the center of the part is more important that being located to the edges, it would have been better to do exactly as you stated. Thanks for your input!
Just to let you know the GD&T input interface had changed in Solidworks 2022.
Thank you for the reply. We plan to update our software and will make sure to create another video outlining the differences.
Is there any reason you started using +/- feature of size dimensions instead of calling out profile tolerances on certain features?
For the .750+/-.010, why wouldn't you call out something like ".020 Profile Tolerance with Respect to Datum Feature A"?
- I guess maybe you care about the thickness more than where the surface is located? Size vs surface tolerance?
You are absolutely correct. Dont forget that Rule # 1 would also control the feature of size to its envelope at MMC. However, we could have changed that .750±.010 dimension to a basic dimension and added a profile control to the controlled surface. For this example we were trying to exemplify as many different methods as we could.