Trying the pocket command: "Cannot use this command..."

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Shalmeneser
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Re: Trying the pocket command: "Cannot use this command..."

Post by Shalmeneser »

:idea:
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want_pocket_SHALM.FCStd
(317.56 KiB) Downloaded 30 times
rek
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Re: Trying the pocket command: "Cannot use this command..."

Post by rek »

Shalmeneser wrote: Thu Sep 16, 2021 7:46 pm:idea:
very cool to see solutions I wouldn't have been able to think of. It took some time to reverse engineer since I am still really bad at interpreting the meanings represented by the Tree View. It's incredibly esoteric from a beginner's standpoint. Need to grow new kinds of logic circuits in my brain.

but I needed there to be fillets on both the inside as well as the outside corners of the handle, which is why I chose to make it out of a solid. I tried adding fillets to the path, that results in a mess. I seriously don't mind adding fillets to the handle after it is solid.

The rotate/spin operation is how I should do the round parts. and I have to learn about the radial thing. but I am not having a lot of success modifying your project. I'm already getting errors and artifacts. Old parts that are gone still showing in the part like this:
I_Changed_size_and_position_of_screw_hole.jpg
I_Changed_size_and_position_of_screw_hole.jpg (66.3 KiB) Viewed 1588 times
but_when_i_close_the_corrected_sketch_the_old_screw_hole_is_still_there.png
but_when_i_close_the_corrected_sketch_the_old_screw_hole_is_still_there.png (71.97 KiB) Viewed 1588 times
I'll also include your version of the sketch with the apparent errors i added so easily. I don't know how to delete ghost renderings of the sketch after i am changing parameters, which is weird since the whole point of parametric-izing things is that way if you change a parameter, it should kind of sort of update itself. But even when i delete the feature that is creating the apparent geometry, the ghost geometry still stays, unchanged.

and moving right along, changed the handle out, kept the rotate thing, put one pocket there, just one mirror operation and I'm ready enough. but lo and behold:
the_classic_mirror_transform_failed_because_wat.png
the_classic_mirror_transform_failed_because_wat.png (89.9 KiB) Viewed 1554 times
detailed Tree View:
expanded_tree_view_what_am_i_even_supposed_to_mirror.jpg
expanded_tree_view_what_am_i_even_supposed_to_mirror.jpg (61.11 KiB) Viewed 1549 times
I started modeling this door handle about a week ago. still not done. this kind of software is super non-trivial.

need to learn the logic-flow about the "Features", need to learn the significance of the Tree structure. Holy Moly.
Attachments
want_pocket_SHALM_modifying_but_errorfest.FCStd
(290.28 KiB) Downloaded 25 times
rek
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Re: Trying the pocket command: "Cannot use this command..."

Post by rek »

working constantly, so im screwing things up in newer and better ways:
mirror_transformation_succeeded_whaaaat.jpg
mirror_transformation_succeeded_whaaaat.jpg (102.16 KiB) Viewed 1543 times
is_that_really_a_mirror_transform.jpg
is_that_really_a_mirror_transform.jpg (23.68 KiB) Viewed 1539 times
is_that_really_a_mirror_transform_really.jpg
is_that_really_a_mirror_transform_really.jpg (33.39 KiB) Viewed 1539 times
here's the file of that monstrosity. How do I describe how messed up this is?
Attachments
how_did_Mirror_Transformation_Do_this.FCStd
(87.07 KiB) Downloaded 31 times
rek
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Joined: Thu Sep 09, 2021 6:56 pm

Re: Trying the pocket command: "Cannot use this command..."

Post by rek »

This is the design I was looking for, thanks for everything!
Thank_You_FreeCAD_Forum.jpg
Thank_You_FreeCAD_Forum.jpg (60.2 KiB) Viewed 1489 times
Prusa Slicer accepted the amf export.
sliced_perfect_from_FreeCAD_amf_export.jpg
sliced_perfect_from_FreeCAD_amf_export.jpg (158.23 KiB) Viewed 1489 times
Using glow in the dark ABS, decided to print it in halves and glue it together with Acetone.
Bance
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Re: Trying the pocket command: "Cannot use this command..."

Post by Bance »

You got a win, that's great. Now you need to learn how to model it correctly.

To analyse a model provided on the forum, make everything invisible using the space-bar, then starting at the top of the tree(the beginning)make each item visible, sketch then feature, until the end. This will show how the model was built step by step.

Fusion(positive or negative) in PD wb is abstracted from the user, that is there is no need to use it the normal course of operations, it is done automatically.

Please remove your version from your signature.
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Shalmeneser
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Re: Trying the pocket command: "Cannot use this command..."

Post by Shalmeneser »

rek wrote: Fri Sep 17, 2021 3:27 am ... but I needed there to be fillets on both the inside as well as the outside corners of the handle, which is why I chose to make it out of a solid. I tried adding fillets to the path, that results in a mess. I seriously don't mind adding fillets to the handle after it is solid.

It's my fault. The DatumLine was attached on the path. When you modify the path, the DatumLine follow an other line from the path. It's the TNP !
In this new version, the DatumLine is independant from the path sketch.
Attachments
want_pocket_SHALM.FCStd
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Shalmeneser
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Re: Trying the pocket command: "Cannot use this command..."

Post by Shalmeneser »

rek wrote: Fri Sep 17, 2021 4:51 am working constantly, so im screwing things up in newer and better ways:
here's the file of that monstrosity. How do I describe how messed up this is?
Your second body has a problem with its axis. The mirror cannot find the right plane.
rek
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Joined: Thu Sep 09, 2021 6:56 pm

Re: Trying the pocket command: "Cannot use this command..."

Post by rek »

my padded + filleted model
tried_making_a similar_inner_and_outer_radius_like_thisjpg.jpg
tried_making_a similar_inner_and_outer_radius_like_thisjpg.jpg (28.62 KiB) Viewed 1239 times
trying to get that shape with a sweep as suggested,
plain vanilla sweep only creates parallel line curves. but what if i wrongify it?
different.inner.outer.radius.jpg
different.inner.outer.radius.jpg (17.89 KiB) Viewed 1234 times
whoops.jpg
whoops.jpg (19.33 KiB) Viewed 1239 times
guess not. 8-)
chrisb
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Re: Trying the pocket command: "Cannot use this command..."

Post by chrisb »

I don't know where the error comes from, but this path would create self intersections.
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