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Shelling a part with multiple features.

I am try to shell the inside of this part without all the extraneous remnants. Any suggestions.
https://cad.onshape.com/documents/bc8497324d4bbc20d036cc2c/w/a92e26e553b7a900556e45dc/e/910fe6b8f10bb9e48eb0e9f9
0
Answers
What are the bits referred to as extraneous?
Looks like the url did not post to show you what I was talking about, but I posted an additional comment with a picture of the intended appearance. Here it is again:
Here is the original:
https://cad.onshape.com/documents/bc8497324d4bbc20d036cc2c/w/a92e26e553b7a900556e45dc/e/910fe6b8f10bb9e48eb0e9f9
I Posted the url, but I get the following message: "Site's 'cad.onshape.com' robots.txt did not allow access to the url."
This is what I was going for:
Sorry for the blurry image.
This is an exercise that was intended to be completed with Solidworks, but I wanted to do it in Onshape.
I figured out my error… I think. I am not sure in this case what the error in the shell command is referencing, I have done some digging and it has led to some confusing stuff.
The drawing specifies a outer edge radius between the slope surface and the top of the body; no issues there. As indicated, when I place the 0.275 radius where the Red Line is and then do a shell then I receive the following error reply, "Shell 1 did not regenerate properly. Could not shell part with selections."
Here is the shot of the part and the location I am referring to:
THERE MAY BE OTHER SIMILAR INSTANCES OF THIS ERROR, BUT I HAVE BACKED UP TO HERE.
https://cad.onshape.com/documents/5c75395ce1e1c14fc21af233/w/db59b3d5a8ce9ffb89c22a76/e/be2da276fb8bb88b2bba848b
You probably want to do most all of your radius work before shell.
That is the issue. I have applied the requisite radii and I went back applied a radius, did a shell… rinse and repeat until an error showed up.
Works ok for me. but I'm not sure what's supposed to be filleted and at what size. Depending on the combination it does throw error.