Countersink slots.

[sales3MPAD]

I am trying to create a slot that is countersunk for a flathead screw.  I know how to create a hole with a countersink, and I made the slots using the sketch slot center to center command.  Then I used Push pull to remove the material.  Slots are perfect except I cannot figure out how to add a countersink to the edges.  I have searched the varied forums with no success.  any help is appreciated.

[TheCADWhisperer]

Chamfer.

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

[jhackney1972]

Here is one way.  I used the dimensions, from Fusion 360 database, for a 0.375 countersunk hole.  Model is attached.

[sales3MPAD]

No real need to upload it.  It's a simple plate with a slot in it.  I have all that.  I just need to know how to countersink it.

[sales3MPAD]

thanks.  I will try that.  Where is the table located in fusion?  I am using a 6-32 screw for the slot so need to create a triangle sketch half the diameter?  Then sweep.  I'll try.

[jhackney1972]

I just started the creation of a countersunk hole using the hole command and copied the values from the display for a clearance hole then cancelled the command.

[davebYYPCU]

Chamfer.

[etfrench]

Get the values like @jhackney1972 says, but do the chamfer like @davebYYPCU says 😁

The values in the chamfer command were taken from the Hole dialog:

You should be aware that imported models from McMaster-Carr won't sit flush in the slot.  (The 6-32 100 degree and 82 degree models are switched in McMaster-Carr, so verify the model after downloading.)

[sales3MPAD]

thanks for all the great suggestions.  I went with the original solution offered because I knew by sketching the angles I would get a true countersink angle.  It was kinda tough getting the profile created and lined up correctly to the axis but eventually it worked and I learned something.  So thank you all  I will try the chamfer idea as well to see if that turns out easier.

[sales3MPAD]

I didn't import anything from MC  I just used the data in the hole function.  Dia was the same so since I created the profile with 82 degrees full angle..  It should be fine.  They look great. and I am hopefully becoming less of a noob.

[steverrk]

I am trying to create this exact thing.. a slotted countersunk hole.
I can't seem to "copy the values from the display" as posted while I have the hole command window open. either this is rocket science or doing this is completely different now in later versions of fusion 360 because for the life of me i can't figure this out. do i have to copy each individual measurement from the hole window into the chamfer window or something?

[g-andresen]

Hi,

Please share the file for demonstration

File > export > save as f3d on local drive  > attach to post

günther