I have used FreeCad a few years but there is always something new for me to learn in your tutorials. I prefer English but I usually understand most of your German tutorials. looking forward to the next one.
I think the original rectangle is swept through the same angle as the arc (approximately 90 degrees) and thus leaves the vertical surface at the left end. You might try defining the final face at the left and using a three (parallel) arc sweep.
An excellent tut. Have just started with FreeCad last week. Played with Solidworks for several years, then switched to F360. FreeCad seems to have a few quirks, but there is always a solution with perseverance. If I might suggest, the handle arch could be resolved if one could make the profile perpendicular to the path, or, change the path to end at the opposite face for this particular design, perhaps starting and ending the path with vertical sections. Many thanks, much appreciated.
Hi - Excellent video. One observation from one of your students... I think I know why the handle fails to form as we (humans) would logically expect it to form when doing a sweep operation. This happens for 3 reasons. The first - well that is obvious - computers are very dumb but very faithful machines. I learned that through 30+ years of software development. They never do the obvious. Instead they do the maths we ask them to do :) The second reason : The profile for the handle is not aligned to the radius of the arc forming the path (i.e. it is not perpendicular to the arc's tangent). The third reason : The arc is not a full 180 degrees - resulting in the profile not rotating the required 180 degrees along the path. All this results in the final profile being only partly rotated by the time it sweeps through the complete arc. To confirm this we need to do 3 changes to the arc forming the SWEEP path to the sketch as shown at time 42:25.. First we need to temprarily remove contraints at the edge of the arc so that we can move the arc's centre again. Then we need to align the centre of the arc to the origin (change distance of the centre of arc to point of origin from 15mm to 0mm). This will result in a 180 degree arc (ie a full semi circle). Next reduce the radius of the arc so that it matches the profile's centre point again. Close sketch. It will now sweep the profile the full 180 degrees and will meet at the other end aligned correctly. Unfortunately the produced handle will not look attractive - but it serves to demonstrate why this happened in the first place. A simple alternative to do this handle may be by sketching the handle's profile in the vertical axis and then PAD it symmetrically. Another alternative which is more complex (but can be used to create a very elegant handle) may be made by doing 3 (or possibly more) profiles of the handle and then LOFT them (ensuring 'Ruled Surface' is unticked). Please keep making videos...I literally learned using this software from your videos. Thanks
Hello, I can't select the DatumPoint with the "External geometry" command. I get "Linking this will cause circolary dipendence" Unamed.Sketch001.Vertex9 . Can you help me, please?
Hi. Thank you for your tutorial. Just a question: why dont you bind datum planes to solid's faces instead of positioning them absolutely in the 3d space?
The Problem is, when TopoNaming changes the faces number, the Datum Planes binding gets lost also. It helps a little , when more than one sketch are created . Then only the Datum Plane must be repositioned.
You must have selected the green lines before clicking datum plane icon. Or select both lines as the fixing elements for the plane. If the plane has no fixing element, no offset can be set.
The problem is the arc path in the center of the handle. The sweep will end when the center of the handle reaches the surface, not the outside edge. Simple geometry. Make the arc path on the outside of the handle instead. Unfortunately, the bottom edge of the handle will protrude out of the bottom of the block. This can be easily taken care of by making the block a little thicker. I made it 3mm.
@@hagei406 thanks. I need to change a hot key in my window manager because ALT+mouse resizes windows in it. So I wasn't able to use it to move the model. I used that 3D cube thing in the corner with the arrows around it whatever it's called.
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Guten tag meine lieber aus Vancouver Canada. Vielen danke fur iihre hervorragend tutorials.
I have used FreeCad a few years but there is always something new for me to learn in your tutorials. I prefer English but I usually understand most of your German tutorials. looking forward to the next one.
Sooooo helpful. I love your videos! Your technique to purposely create a problem that a beginner would experience (and then solve it) is really smart.
Thanks....
Now, I'm waiting on your next freecad forum or video post where you explain how to fix that handle attachment point. ;)
Can you explain this further. There is a lot of occurences regarding attachment points in FreeCAD. Maybe ask in the Forum.
I am sorry. I am referring to the attachment design of your handle. The sweep command did not end in the same way as the start point.
I think the original rectangle is swept through the same angle as the arc (approximately 90 degrees) and thus leaves the vertical surface at the left end. You might try defining the final face at the left and using a three (parallel) arc sweep.
An excellent tut. Have just started with FreeCad last week. Played with Solidworks for several years, then switched to F360. FreeCad seems to have a few quirks, but there is always a solution with perseverance. If I might suggest, the handle arch could be resolved if one could make the profile perpendicular to the path, or, change the path to end at the opposite face for this particular design, perhaps starting and ending the path with vertical sections.
Many thanks, much appreciated.
Great for a multi parts demo thanks for your time LJ
Hi - Excellent video. One observation from one of your students... I think I know why the handle fails to form as we (humans) would logically expect it to form when doing a sweep operation. This happens for 3 reasons.
The first - well that is obvious - computers are very dumb but very faithful machines. I learned that through 30+ years of software development. They never do the obvious. Instead they do the maths we ask them to do :)
The second reason : The profile for the handle is not aligned to the radius of the arc forming the path (i.e. it is not perpendicular to the arc's tangent).
The third reason : The arc is not a full 180 degrees - resulting in the profile not rotating the required 180 degrees along the path.
All this results in the final profile being only partly rotated by the time it sweeps through the complete arc.
To confirm this we need to do 3 changes to the arc forming the SWEEP path to the sketch as shown at time 42:25..
First we need to temprarily remove contraints at the edge of the arc so that we can move the arc's centre again.
Then we need to align the centre of the arc to the origin (change distance of the centre of arc to point of origin from 15mm to 0mm). This will result in a 180 degree arc (ie a full semi circle).
Next reduce the radius of the arc so that it matches the profile's centre point again.
Close sketch. It will now sweep the profile the full 180 degrees and will meet at the other end aligned correctly. Unfortunately the produced handle will not look attractive - but it serves to demonstrate why this happened in the first place.
A simple alternative to do this handle may be by sketching the handle's profile in the vertical axis and then PAD it symmetrically. Another alternative which is more complex (but can be used to create a very elegant handle) may be made by doing 3 (or possibly more) profiles of the handle and then LOFT them (ensuring 'Ruled Surface' is unticked).
Please keep making videos...I literally learned using this software from your videos.
Thanks
Hello,
I can't select the DatumPoint with the "External geometry" command. I get "Linking this will cause circolary dipendence" Unamed.Sketch001.Vertex9 .
Can you help me, please?
Are you sure you try to select the right point ? Maybe switch anything else than the sketch you want to refer to OFF .
I really enjoy watching your tutorials. Thank you for making them in English! Looking forward to more.
Hi. Thank you for your tutorial. Just a question: why dont you bind datum planes to solid's faces instead of positioning them absolutely in the 3d space?
The Problem is, when TopoNaming changes the faces number, the Datum Planes binding gets lost also. It helps a little , when more than one sketch are created . Then only the Datum Plane must be repositioned.
Thank you for your relaxed tutorials !
at 10:40 the Attachment Offset for the second datum plane is inactive-not attached. How do I fix this?
You must have selected the green lines before clicking datum plane icon. Or select both lines as the fixing elements for the plane. If the plane has no fixing element, no offset can be set.
Great tutorial.. Easy to following it.. Btw, is there is solution for the ark? Thanks anyway
I have not looked for it, but i think it is a known problem in OCC , which is the 3D Library under FreeCAD .
The problem is the arc path in the center of the handle. The sweep will end when the center of the handle reaches the surface, not the outside edge. Simple geometry. Make the arc path on the outside of the handle instead. Unfortunately, the bottom edge of the handle will protrude out of the bottom of the block. This can be easily taken care of by making the block a little thicker. I made it 3mm.
I could not select two lines as shown at 10:14 with my 0.18 version. I thought shift let me choose multiple items? Oh well.
That can vary by OS . And it think it should be CTRL or CMD anyway..
@@hagei406 thanks. I need to change a hot key in my window manager because ALT+mouse resizes windows in it. So I wasn't able to use it to move the model. I used that 3D cube thing in the corner with the arrows around it whatever it's called.
I have 0.18. Ctrl works.
Has anyone found the solution yet ?