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Need some help with being efficient.
asterios_anagnostou
Member Posts: 22 ✭✭
Hello everyone,
I'm creating a wall mount sort of thing and wondered if there was some way to inversely mirror one of the faces of my part so that the original part can slide into the mirrored part. The back of the part has some tangs that stick out that I would like to fit into slots. So sorry if I'm not using the correct terminology! I can link that part so you can take a look. I think once you see it, you'll know what I mean. What I'm trying to avoid is building the mating surface from scratch. I tend to take the long way around to things as it is lol.
Thanks so much for any help!
https://cad.onshape.com/documents/5f9eba813c490d107b3bbd3e/w/b120a9b650751e674f368a85/e/e1de82cafdc2a39fae9c9481?renderMode=0&uiState=67a55d06eff7513f26c1b518
Comments
From where you are now, draw a box to represent the mating surface, and make it flush with the back. Then use the boolean>subtract tool, and subtract the holder from the mount. It will make slots in the negative shape of the tangs.
After you do that, move face on either the tang or the slot to make sliding clearance. Otherwise, the parts will never fit. I'll assume you are 3D printing this. If so, move face .015" as a start, and see how that fits when you make a test print of that localized area.
If efficiency is a goal, I'd say most of the features (mostly fillets) would be unnecessary if the method was approached differently.
The shape of the right-angled base piece, including the dovetail like rails, could be created with one sketch and one Extrude/Symmetrical. Another sketch on the proper face of that part to define the curved arm that goes toward that spindle and then an Extrude/Remove of portions of that sketch to create the shape. Lastly, another sketch and a Revolve to create the spindle.
Regarding efficiency: Here is how you can do it in 6 features:
https://cad.onshape.com/documents/cf959671c75e79afd37ce6d6/w/1dec3a0f2b34bea075…
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Technically you could do this part with two features if you use a custom feature. Well you could do it in one if it were made for this, but Intersect Views is a generic custom feature I made for things like making parts from old drawings that have a at least two drawing views.
https://cad.onshape.com/documents/cf959671c75e79afd37ce6d6/w/1dec3a0f2b34bea075ac5…
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Thanks for all the tips guys!
I definitely have a lot more to learn! I'll try and implement some of what you guys put in here and report back. I've never used Boolean or Revolve because I wasn't sure what they did (still not sure to be honest). Largely, the way I learned to do things in OnShape has been trial and error (mostly error, aha).
Michael, thanks for building that! I confess that method never even occurred to me. So what you guys are suggesting is that I draw the whole thing out as a sketch and extrude from there in both directions instead of piece by piece, sketch by sketch. It looks like that's how you did it. I am not sure how to "cut out" and "extrude cut out".
I appreciate y'all.
Hey Nick, I'm trying to do what you're explaining here, but no luck. I'm probably misunderstanding it. So I looked at the part from the rear, where the tangs are. I drew a box around the part, but was unable to Boolean anything.
Ella malaka:)
This is the basic method. I did the offset in the same boolean tool. Adjust that number if the print is too tight or loose. You can also make the offset a separate feature like I mentioned above, using "move face".
Here is a link:
https://cad.onshape.com/documents/5a84045efd9045caee0ff63a/v/f8c0fdf4986477525cf0e1f2/e/39bdbfe744eca2f27da2ca1d
Ella re Niko! I had a feeling you were Greek! LOL.
Thanks again, bro. So you were able to do the Boolean off of the extrude 11 huh?
I think the problem I'm having is that I don't know which surfaces to click on for the Boolean to make it do what I want it to. I had the same issue with Moe Face. I will mess with it a bit. So far, I've been able to separate the mount from the wall fixture, but it takes the tangs with it. This is farther than I got before though.
Malakies to tetragono. It's hard trying to teach an old mechanic new tricks. =D
Put part 1 in tools, and part 2 in targets. Then you should be set. Tool is the part doing the cutting. Target is part getting cut.
This particular tool does not go by surfaces, only entire parts. It goes by the entire part. You could even pick the parts from the tree instead of the graphics area.
Also, it helps to name the parts like I did. This way its easier to know which is which when selecting.
Ok, I will try to do that and let you know. Thank you bro.