Need bit advice! Deep pocketing operation

[NeilFerreri1]

My dewalt 611 was set to speed 5

Drop that to 1.

I don’t have an X-carve, but you should be able to at least cut deeper than 0.05".

[BrandonR_Parker]

You mentioned that you are using the 1/8" collet adapter. I can see the adapter sticking out the bottom of the Dewalt 611 in your image.

When doing so the bottom of the collet adapter should be flush with the bottom of the 1/4" collet for the Dewalt 611. Without them being flush at the bottom with one another the proper clamping forces are not being applied where they should be and the bit could flex the collet adapter horizontally.

I use the standard Dewalt collet with the Inventables 1/8" adapter, tighten the ever-living snot out of it every time, and I have never had a bit snap inside the collet.

There should be no stick-out of the adapter from the bottom; the two should be flush with one another.

My best artwork yet… You get the idea though…

As other have suggested I would use an upcut bit as well.

{:0)

Brandon Parker

[WayneHall]

I would run the feedrate around 50 14in/min and the plunge at .125". You can plat with the feedrate up or down depending how the cut looks.

[RyanDunfee]

That does make a lot of sense!
I think what you’re seeing is the black ring around the solid carbide 2 flute straight end mill. I did have the collet adapter pushed all the way up in where it was familiar to me working with a regular router.
I feel like it might have been the bit chattering too much, maybe because I didnt have it tight enough. I swore I had it tight enough but maybe it loosened itself over the length of the hour+ cut

[BrandonR_Parker]

Gotcha…

That makes sense; I had not realized there was a ring on the bit.

{:0)

Brandon Parker

[TheGuru]

@RyanDunfee you got a lot of great advice already, but I would consider looking into Fusion 360 and adaptive clearing with a large bit if you want to pocket that much material regularly. I’ve done a couple bowls using a 1" bit at 60ipm and .125 DOC. I did a couple videos about my testing and the results if you are interested:

Thanks!

-Tom

[RyanDunfee]

Just starting to watch now! This is super helpful and I think I already have that same bit (but green, from Lee Valley)

[JjGray]

I would recommend a 1/4 in shank bit with enough depth of cut to do the job. If your max depth of cut is 1 in, then only use a bit with 1 1/4 sticking out of the collet. Also slow down the feed rate.

[PeterNordenstrom]

In the picture the bit is sticking out very much. If you do not need so long sticking out, Try to pull it up more. You can get vibrations when it is so long and that can break the bit.

[RyanDunfee]

The plastic part of the bit was flush with the collet when tightened.
I am thinking this was just a fluke with the bit. I’ve been cutting since mid March without any issues at all

[RobertCasarin]

I bought a bit, 3/16th with a 1/4 in shaft, works great

[AdamLuff]

Go big! I combed the forum and did this Ain’t she purty?

I can now ploughing out using 1/2 shank mill bits. Love your boxes…care to share the easel project if you did not already?

[AdamLuff]

@RyanDunfee. Forgot to @M you

[RyanDunfee]

I’d prefer to keep the design private.
I’m basing my business around designs like this and even though it is simple it is a money maker for me. I’m sure you can figure out how to build one similar.

[RickPeterson]

Collet adapters are pretty much junk as well. I would buy a collet for each size bit shank you plan to run. Its worth it.

[AdamLuff]

Copy that

[JohnathanBranson]

Any thoughts on sharing that box design publicly?

[RobertBeattie]

I’d prefer to keep the design private.

Gonna guess no.

[RyanDunfee]

Yep, have a look a few comments up.

[WillAdams]

I wrote up the basics of designing boxes similarly at:

https://wiki.shapeoko.com/index.php/Design_into_3D:_box:_fitted

just needs one to convert the finishing pass into a pass with a ball-nosed or bowl cutting bit.