Search found 67 matches

by Workshop_Notes
Thu Jul 21, 2022 7:12 pm
Forum: Open discussion
Topic: Chamfering with 90 degree angle - stand corrected it is called couterbore
Replies: 17
Views: 765

Re: Chamfering with 90 degree angle - stand corrected it is called couterbore

Is there simple way to create counterbore on both sides of through all hole? One for screw head, other for nut. Please think carefully about what you are asking. What would the fastener be doing in that case? It would not be fastening any one thing to any other thing. All it would be doing is exert...
by Workshop_Notes
Thu Jul 21, 2022 6:56 pm
Forum: Python scripting and macros
Topic: Multiple revolutions per stroke, cam groover
Replies: 2
Views: 282

Re: Multiple revolutions per stroke, cam groover

The length has to span the crossroads where the grooves meet, so the leading end enters before the trailing end exits. See Fusion359 sketch attached.
Screenshot from 2022-07-20 09-37-50.png
Screenshot from 2022-07-20 09-37-50.png (29.34 KiB) Viewed 129 times
by Workshop_Notes
Thu Jul 21, 2022 6:44 pm
Forum: Python scripting and macros
Topic: Line tangent to arc or circle in draft mode
Replies: 3
Views: 294

Re: Line tangent to arc or circle in draft mode

Are you aware of the geometric construction that can do this? That might be a work around for you. Clearly, if you need it a hundred times, it will be very slow, but once or twice, it is not so bad. This is how to draw a line tangent to a circle from a point in space. Note that the point has to be o...
by Workshop_Notes
Sun Jul 17, 2022 3:59 pm
Forum: TechDraw
Topic: Dimension extension lines
Replies: 23
Views: 1878

Re: Dimension extension lines

See ... With respect, that document is not really helpful here. It is called 'Guide to British Standards' it references only BS8888 in general. The two Standards that FC uses (ISO and ASME) are documented in the Wiki and are both available (not necessarily strictly legally) to download as pdfs. So,...
by Workshop_Notes
Sun Jul 17, 2022 3:41 pm
Forum: Help on using FreeCAD
Topic: Need Help with "Sketch.Constraints" and Spreadsheet
Replies: 7
Views: 334

Re: Need Help with "Sketch.Constraints" and Spreadsheet

...you have not assigned an unit to your spreadsheet cell so FreeCAD can't guess I think the problem is a little more subtle. It would be a mistake to read your reply and infer that you need to add units to all spreadsheet values. I think it would be true to say in general, it is not necessary to p...
by Workshop_Notes
Sat Jul 16, 2022 6:02 am
Forum: TechDraw
Topic: Dimension extension lines
Replies: 23
Views: 1878

Re: Dimension extension lines

Yes allows, but allowing does not mean, that it should be default. That is the fine difference. I agree. Where the Standard has a default setting for something, that should indeed be the FC default. Where someone wants to use an alternative, but still Standard-compliant option, they will have to se...
by Workshop_Notes
Thu Jul 14, 2022 8:17 pm
Forum: Open discussion
Topic: Best way to offer a bounty for feature development?
Replies: 7
Views: 462

Re: Best way to offer a bounty for feature development?

Specifically, I need to be able to make a bezier spline through specific points in Sketcher, and then to be able to constrain points to lie on that spline. Please, are you aware that the ability to create a spline through specific points exists in Draft? Draft, Bspline is the way to do it. I think ...
by Workshop_Notes
Sun Jul 10, 2022 5:40 pm
Forum: Path/CAM
Topic: How does path handle non-circular curves?
Replies: 2
Views: 223

Re: How does path handle non-circular curves?

I use Sketcher, B-Splines are parametric there... Path "cuts" the B-Spline to arcs to approximate the shape. Thanks for the reply. In Sketcher, I cannot see a way to use the points I pick as points on the curve. The B-spline option uses the picked points as control points, which is differ...
by Workshop_Notes
Sun Jul 10, 2022 6:17 am
Forum: Path/CAM
Topic: How does path handle non-circular curves?
Replies: 2
Views: 223

How does path handle non-circular curves?

This is slightly peripheral to the main aim of path, but please indulge me. There is a thread here: https://forum.freecadweb.org/viewtopic.php?f=3&t=70045 where we have a series of (x, y) coordinates and want to fit a smooth curve through them. In AutoCAD, I would draw a polyline through them an...
by Workshop_Notes
Thu Jul 07, 2022 8:16 pm
Forum: Help on using FreeCAD
Topic: [Solved] Changing FreeCAD shapes to line drawings
Replies: 8
Views: 381

Re: Changing FreeCAD shapes to line drawings

See TechDraw_Hatch and TechDraw_GeometricHatch . I think his description as 'shading' is apt and is somewhat different to hatching. I think what he wants is something artistic, to show how the light hits an object. See https://www.dreamstime.com/stock-photography-machine-tool-image16954572 as an ex...