Sketch Angle Issue

OK, class, we are going to draw a cone (revolve feature). Now, follow closely to these instructions. This cone is going to be 7" long. Make the big end radius a dimension of .18". Make the small end radius a dimension of .12". Sometimes, we want to know what the angle will be (not included - just on the side). Go ahead and throw that angle dimension on there? What did you get? If you make the cone less than 7" long, you will probably get an angle dimension. If the cone is longer than 7", the dimension will probably not be an angle.

Is it just me or this a serious issue? Of course, there is a work-around. Make the cone 6" and then put the angle on there and then make the length grow accordingly. If we are not careful, this could bite someone!

arlan p.s. two glass houses. twenty stones. fourteen yellow. six are blue.

Reply to
Arlan.Murphy
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Arlan,

I can't wait until we can post to a newsgroup in our own voice instead of typing. Anyway I can't reproduce your issue. I have to be screwing up the steps. Are you leaving the profile open before you dimension or are you fully enclosing the revolve? Are you using a centerline like the old days or not using a centerline? When you say you don't really want the angle dim does that mean you want it there but just to be driven?

KM

Reply to
ken.maren

Arlan,

I got 0.51310298deg.

Reaper

Reply to
Reaper2561

Reply to
Stefan Loukov

Yes, I am leaving the profile open. I am using a centerline just like the good ol' days. Yes, I want the angle dim to be driven. How I found this issue is because I needed to figure the taper on a piece that was 40.5" long. I have explained this 3 different ways so far and I just can't seem to do the explanation correctly! OK, picture this: A plate that is 10" long and you mic one end and it is .12" thick. Mic the other end and it is .18" thick. It has a taper (obviously!), but we want to know the angle. Lay the part flat on the granite, and the angle we want to know is from the granite (square to the world). I ended up getting the angle I wanted (.08488257=B0) by shortening the part and I found that the 7" length was the 'break over' point.

I don't know if using a centerline was the proper way to start this, but it is the way I draw...

arlan

Reply to
Arlan.Murphy

Of course, it's me! What else could it be? :~)>

I was able to bounce this off of a friend in another state and he was able to reproduce my issue. He said bob z. should get at it on the newsgroup, but bob z. is LAZY.

arlan

Reply to
Arlan.Murphy

I am probably leaving off the most important information:

swx2006 sp4.1 dell 8400 pentium 4 - 3ghz

1gb ram ATI VIDEO CARD
Reply to
Arlan.Murphy

If I put the angle in the sketch, between the angled line (the one that makes the tapered face on the cone) and the centerline, I have no problems at all (2006, sp 4.0).

I figured that maybe I didn't understand where you were trying to put that angle dim (in the sketch, in a drawing, or what?) I did learn that if I show the sketch after the feature has been made and put a reference dim between the same line and centerline but in the model mode, I can still dim the angle, but not the inside angle - it comes out as 179.8 no matter what I do. However, that has nothing to do with the 7" cutoff - it happens if I make the cone 2" long.

Ed

Reply to
ed1701

I didn't have your problem on SW06 SP0 or SP4.1.

Jerry Steiger Tripod Data Systems "take the garbage out, dear"

Reply to
Jerry Steiger

well, good ol' bob z. begs to differ with you. you probably ride a harley...

is this what you guys are drawing? bob z. got it the first try. here is a screenshot:

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Reply to
bob zee

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Reply to
bob zee

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Reply to
bob zee

Using Bob Zee's example I was able to replicate the same behavior. Not sure if it has anything to do with the angle being less than 1 degree. If you take the .180 to .200 and re-dimension it gives an angle. At .190 the dimension is linear.

This is my home computer running SW06 SP4.1

Regards,

Anna Wood

bob zee wrote:

Reply to
Anna Wood

I too attempted to duplicate this problem and found the same results that you did. I then looked at the tools/ options/ document Properties/ units and found the default degrees was set to 0 places. When I increased the number of decimal places the dimension tool then produced the desired results. What could make this even more confussing is that this variable can be set with the drawing template so that one time it could look like the results are fairly inconsistent between seats.

Reply to
Ed

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