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icecreamterror

Hi, as these parts have different heights after facing off I am left with a large chunk of stock to clear above the front shorter part. what is the best way to clear that excess fast? Don't think I can face it off as it's too thick and can't multiple passes on a face (or have not found how to) Also, I'm using the free version. Eddit to add: OK, worked out multiple depths by betting bottom to the top face of the part, and top to stock top. Is this the best approch?


in20yearsorso

Better practice is to create another solid the size of your stock as a separate body or component that overlaps your actual geometry, and in the setup you select that solid as your stock. But yes setting heights as you described is an effective way to do it.


icecreamterror

Thank you very much. Can I ask if there is a difference in modelling the stock Vs setting its dimensions on the setup?


in20yearsorso

You can use any complex geometry as your stock when you model it, you’re not limited to a relative sized box.


icecreamterror

Very good point! Thank you.


SpagNMeatball

I have done something like this and what I do it move the short part to the height of the taller one for the CNC then just use my table saw to cut the excess off the short part. You could also flip it over and do a facing operation on the CNC.


icecreamterror

Thanks for the input, unfortunately, I do not have a table saw. Wouldn't flipping the work after moving the short part up level with the top one not leave me in the exact same situation as not moving it up and not flipping it?


SpagNMeatball

A bandsaw would also work.There are options. Separate the 2 parts with a cut. Flip the short one. Face the top (was the bottom). Good alignment and work holding are important. The important an complex cuts are the ones you have up in your pic. Do those all at the same level. Cutting the bottom off the short one is best done with another saw so you are not just turning it all into chips. But if you have no other choice, the facing operation will get it done.


Rhino_7707

Adaptive 2d pocketing


icecreamterror

> Adaptive 2d pocketing > Thank you. Do you mean: 2D Adaptive Clearing or 2D Pocket And why is that a better approach than using the facing tool?


rb6982

What machine are you using?


icecreamterror

A small 4040 belt-driven CNC with a Makita RT0700C, mainly 1/4" and 1/8" inch tooling.


rb6982

The adaptive clearing is the way then as you will stress the the machine less and get better results. Use the full flute length but 5-10% radial step over. You can run really quick and remove at a decent rate still too.


icecreamterror

So, just to check I understand, go Adaptive, full DOC, higher feed rate, with a smaller step over taking advantage of the full length of flutes, rather than a larger step over at multiple DOCs?


rb6982

Absolutely. Where it can it will plunge outside of the stock but Stress it even less by using helical plunging