Calling Inventor Gurus.....
The HATCH pattern is changing off 45 degs when more than 1 part is touching. STD is GB and
the HATCH pattern is ISO, set at 45 but changes ?? Any ideas ???
The Green hatching is the incorrect one and is selected, so the dialogue box is for that pattern.
Each part must have a different hatch pattern to distinguish it. So each part has a 45 degs hatch but left slanting or right slanting and doubled etc. So irespective of how many parts, we can tell they are seperate. We used to teach this with set squares on drawing boards, now Scottish kids do CAD only.
Here is anaother example of a sectional view, with the HATCH patterns not at 45degs, therefore not complying with stds. You can tell which parts are whcih but it does not comply wiht 45degs BS stds. And therefore fails assessment for the students. 
I understand, one might be at 45deg another at 120.1265783 and another at 31.xxx......
I think the difference, since you and I learned on tables with squares, is that somone at Autodesk decided that 45deg isn't important or required within the standard. Particularly within complicated assemblies where the standard 45deg hatch would end up conflicting at some point.
I believe the automatic hatching is working as intended.
Hi! Nick,
Indeed, the hatches in multple components participating in the section view are rotated based on a list of preset values. I have to admit it is not easy to discover. Here is what you need to do.
0) Go to Projects dialog -> make sure Use Styles Library = Read-Write.
1) Open the IDW or DWG template of interest.
2) Go to Manage -> Styles and Standard -> Styles Editor -> General -> Preset Values -> Section Hatch Angle -> delete all of the preset values -> Save.
3) Go to Manage -> Styles and Standard -> Save -> click Yes to all -> OK.
4) Save the template file.
Now the template and the Styles library will not have the preset Section Hatch Angle values. The additional rotation will not happen. Let me know if it works for you.
Many thanks!
Johnson,
Thanks for your help/advice, I'm nearly there !
I have tweaked the settings (never checked that drop down box) and 80% there. I have also changed the angles to 45 correct and
90degs to that, for an adjacent separate part. But, that doesn't work !
Any ideas ?
Nick
Inventor 2013 SP2
So, the School bell has gone, round 4.
I applied the semi fix and selected a Hatch,then RMB> Edit Hatch Style and changed the 'Shift' to 90degs and hey presto, one part has 'shifted',
he red circled bit below. So not what I thought. I thought it would flip and roate by 90degs.
Hi! I don't think the change in Section Hatch Angles would be effective on existing drawing views. You will need to create new section views. The other thing is that if you want 45 deg and 90 deg, you will need 0 deg and 45 on the preset value list. Otherwise, they will all be 90 deg if you only have 45 deg on the list.
Let me know if more information is needed.
Thanks!
That's not quite correct. Here's a passage from BS 8888
'Standard hatching is done at 45 degrees to the principle outline of the part.'
I see that you've worked out how to set the default hatch orientation?
http://beinginventive.typepad.com/being-inventive/2011/07/fix-hatch-angle-in-section-view.html
After you've created your hatched section, you'll need to double click on each non-compliant hatch in your section view on your drawing and manually override the hatch angle.
Let us know how you get on 🙂
Paul
More help here:
https://forums.autodesk.com/t5/inventor-forum/understanding-inventor-hatch-angles/m-p/7832115/highli...
The left view 'AA' was created by Inventor and I created the 'BB' view, the right hand view, but edited each hatch areas angle to be
45degs and changed the scale to make each adjacent area unique.
Hi Nick,
I am sorry I must be missing something here. I thought my reply (#9 and #13) already explained the solution. If it still does not work, we may have a bug. Please share the files that exhibits the behavior. Forum experts can help take a further look.
Many thanks!
