How to force a hole to go all the way through the stock

[jscott6SWZG]

Created holes in design along with countersink...cut was well below where stock is.

Created bore in manufacture highlighted countersink and hole....simulation shows hole cut to model bottom...countersink good...

Played with heights either get no countersink or fail to generate tool path....what am i doing wrong

[Spencer.AC]

Are you milling the thru hole or drilling? It might help to break them up into two separate operations. In the case of drilling there should be an option in the heights tab under the 'Bottom Height' section that says 'Drill Tip Through Bottom', check that box. Also, you can put a negative offset in that text box to achieve the same result. Hope this helps!

[engineguy]

@jscott6SWZG 

So, you are trying to use the 2D Bore toolpath tomachine out a Countersink and a through hole.

It seems to work fine here but without your actual file it is not possible to say where you have gone wrong with any settings, a simple example here gets me ove 3000 lines of code 🙂

[seth.madore]

@Spencer.AC could you share your Fusion file so we have a better idea of what you're encountering for issues?
File > Export > Save to local folder, return to thread and attach the .f3d file in your reply

[Spencer.AC]

I am not the OP.

[seth.madore]

Nope, my mistake, sorry about that.

@jscott6SWZG could you share your file here?

[jscott6SWZG]

Sorry guys got busy on another project...

I used the method of boring a hole then bore the countersink with two operation....works but it feels like a work around...

So I created another bore with countersink and drill in same operation...worked but then i went to offset hole bottom to -2mm to drill through stock....nope got no toolpath because tool doesn't fit  (it is a 1/8 ballnose in a 5.5 mm hole).

See attached file

[engineguy]

@jscott6SWZG 

Because you are using a Bore strategy the tool will only go to the ends of the Faces selected which is why you can`t get to the bottom with the Ball nose, the tool tip stops at the bottom of the hole.

To go through with the Ball nose you can only go to a depth past the hole bottom of a value that is equal to or less than the Radius of the Ball nose, in your case that would be Hole Bottom -1.6mm (To one decimal, = -1.5875 to four decimals, Radius of a 1/8 Ball nose), which is why your -2mm isn`t working, if you can live with the -1.6 then you are good to go 🙂 🙂 🙂

If you have to go deeper than the 1.6mm then as a "workaround" you could easily go to your Design mode and duplicate the Model, then use the "Press/Pull" to extend the bottom of the Model down a few mm and then back in Manufacture you can use the new Model with the deeper hole to select faces just for that Bore Operation, ugly but quick and easy to do and it won`t affect anything else.

No good asking me why it does what it does because I have no idea, I am not in the Developers heads, so, is it a "bug"??

Or is it an "expected behaviour" that is "by design" ??

Maybe there is a simpler explanation that I have missed completely 🙂 🙂 🙂

You got to love the way some things are thought through 🙂 🙂 🙂

@seth.madore  Seth, any chance you can ask them about this ??

[seth.madore]

@engineguy, this isn't entirely accurate, if I'm understanding what I'm looking at in the file. With a -2mm offset, the Cone toolpath collapses into itself, which is why it works at -1.5, but not at -2mm. Here's the cone at a -1.5 offset:

Since the toolpath collapses, the entire selection fails, resulting in the warning you see.

Either split it up into two separate toolpaths, or live with the -1.5 offset and add material onto the bottom of the part to force the tool to go deeper 

[jscott6SWZG]

Ah I get it.....

This has been a big run around...

Really don't understand why this is like this

Anyway seems like you need to separate the operations first bore the countersink...then bore (because of odd size 5.5 mm)the hole with an offset of -2mm

This all seems reasonable since a countersunk hole is a really odd shape probably only gets used what 10 million times a year???? Geez

[seth.madore · Accepted solution]

You totally can do both features in one toolpath, the issue is that your 2mm offset creates a toolpath that collapses on itself. If you had a bigger hole, or smaller tool, this issue wouldn't show itself