Noob / enthusiastic amateur - hole function

sam_wehrli

I have some horribly outdated background. I got into welding / fabrication for the simple fact that I couldn't afford college. I love it, but my first love will always be CAD. I got drafted at work to build some fixtures, so I am trying to model them in OS so that more experienced machinists can make the individual parts, being that the tolerances on these fixture can be pretty tight. 

I have the basic parts modeled, and I am stuck. I'm missing something silly. I have the parts modeled and my sketch points located, but when I attempt the hole function I get an error about intersections. The holes need to be tapped 5/16 - 24 in the last part (0.5 inch), and close fit in the first 2 (3.5 inches). Any help would be greatly appreciated. I made the drawing public.

https://cad.onshape.com/documents/844a3dff7796ca887e8368e4/w/8365d3095285df67b07ceb1b/e/3a59f6c1ef636442696465b0

mahir

I took a look, and you're right. Nothing will make that hole feature work. However, starting a new one works just fine. I would submit your model for a bug report, but in the meantime just start a new hole feature. 

https://cad.onshape.com/documents/5798e4b9e4b0a946ab263685/w/46781d54853e91f84547d3db/e/51c75a141f29120699ec4042

henry_feldman

sam_wehrli said:

I have some horribly outdated background. I got into welding / fabrication for the simple fact that I couldn't afford college. I love it, but my first love will always be CAD. I got drafted at work to build some fixtures, so I am trying to model them in OS so that more experienced machinists can make the individual parts, being that the tolerances on these fixture can be pretty tight. 

I have the basic parts modeled, and I am stuck. I'm missing something silly. I have the parts modeled and my sketch points located, but when I attempt the hole function I get an error about intersections. The holes need to be tapped 5/16 - 24 in the last part (0.5 inch), and close fit in the first 2 (3.5 inches). Any help would be greatly appreciated. I made the drawing public.

https://cad.onshape.com/documents/844a3dff7796ca887e8368e4/w/8365d3095285df67b07ceb1b/e/3a59f6c1ef636442696465b0

I had no problem placing holes at the points I found at 5/16. A screenshot/cast of the error would be awesome to help diagnose the issue

Matthew

@sam_wehrli I tried to place the holes in both locations and had the same issue you are seeing.  I even tried creating a new model and place the hole into the new model, in a new document with the same issue.  I used this feature just yesterday on a design that I am working on.  Here are a couple screen shots of the error that I am seeing in the model that I created.

I tried changing the drill depth to be a blind hole in the last part and a through hole and that did not seem to affect the issue that you are seeing.  Not sure what is going on here.  Anyone else have any ideas.  If you are able to get it to work please share some screenshots of what you did to get it to work.

Matt

brendon_jones

I'm a newby too but get the same error with that 'blind to last' feature.

sam_wehrli

well I feel a little better lol I was so frustrated... I watched a dozen YouTube vids with guys just pointing and clicking, thinking I was just missing something obvious. Hopefully someone can get this solved for me because the embedded standardized bolt hole function is the main reason I was drawn to this program.

sam_wehrli

@HENRY_FELDMAN I can make a simple hole work, it's the blind in last feature that won't. It seems to for some people:

https://www.youtube.com/watch?v=c2WzT-betMI

but I get the same error that they do ^^^ The hole renders in red while I am still in the dialog box, and no combination of changes will make OS recognize the last part. The hole I am trying to define clearly intersects not 2 but 3 separate parts, it just doesn't work. Unless again, I am missing something really stupid. That is definitely possible lol. For the record that drawing has 2 sets of holes in the sets of functions that I have defined, one through 3 and another through 2. Neither work. I tried in another studio to simply extrude 2 plain blocks and perform this function. It doesn't work. At least the dialog box gives you the standardized dimensions to manually extrude the individual cylinders i guess. 

sam_wehrli

owen_sparks

Does it work if you do it in two operations?

(1) "Through and counter-bore" in yellow part
(2) "Blind in last" on blue and grey part.

Owen S.

mahir

I took a look, and you're right. Nothing will make that hole feature work. However, starting a new one works just fine. I would submit your model for a bug report, but in the meantime just start a new hole feature. 

https://cad.onshape.com/documents/5798e4b9e4b0a946ab263685/w/46781d54853e91f84547d3db/e/51c75a141f29120699ec4042