How to Annotate Holes Passing Through One Surface of a Part 1

[axym]

Hi All,

This one might seem obvious, but I'm not a drafting expert.

I have a part with a square tube, that holes are drilled into. The holes go all the way through the "top" layer of the tube, but not through the "bottom" layer. What is the best way to indicate this on the drawing? Do I use the word THRU?

Evan Janeshewski

Axymetrix Quality Engineering Inc.

http://www.axymetrix.ca

 

[fsincox]

pmarc,
Would you have used "12X" in that case? I do think "BOTH SIDES" with the section as shown sets a bad example. Particularly, since they want to minimize text do to lanquage concerns.
Frank

 

[CheckerHater]

I do think "BOTH SIDES" with the section as shown sets a bad example. Particularly, since they want to minimize text do to lanquage concerns

That’s exactly the point. <CF> replaces “BOTH SIDES”

 

[pmarc]

Frank,
In my opinion THRU BOTH SIDES or any other notation is not needed at all in this case. Cross-sectional view makes everything pretty clear.

There is a geometric diffence between "6X" and <CF> on one hand and "12X" on the other, so my choice would depend functional needs.

 

[fsincox]

pmarc,
If you say 12X do they have to clock only do to the simulaneous requirement, then, in your opinion?
Frank

 

[pmarc]

Yes, simultaneous requirement would clock 6 holes on one side with 6 holes on the other side of the part.