Carbide 3D Flip Frame for 2 sided machining

I ordered one of these today and I’m preparing to have stock cut at a local metal supplier (6061 aluminum).

Noob question: If I choose a piece of stock to fit the entire jig, is it possible to carve up three knights (other small pieces) at once? Or should I choose a stock size for doing three pieces individually?

I have limited MeshCam experience. I plan on trying my tool paths out on wax first once I figure all of that out for my part.

Josh-
Getting your aluminum pre-cut is the way to go, FYI:
The Max Inside dimension of the flip frame is 2.95" x 4.95" x 1.25"

In regards to filling up the stock with parts for flipping, yes, but you need to allow for the material to be held, so you need a border and supports.
You can surely fit 2 knights, maybe 3?
A quarter inch safety border inside the flip frame is a good safety margin, you don’t want to drive the cutter or collet nut into the flip frame.
Just a reminder, when you set your max depth in meshcam, make sure to check that the cutter you use has that much reach. if my max depth is 0.5" make sure the endmill, when installed, is longer than 0.5" from tip to collet.

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I’m just getting started programming a 2-sided machining job in MeshCAM. My part requires me to machine almost all of the way through from the top and from the bottom, the z depth won’t need to be as deep. I don’t see an option to set different z cutting depths for side 1 vs side 2, am I missing it? It would also be nice to have the option to use different tools for each side but it looks like I may have to set up two independent single sided jobs to make that happen.

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Remmy,

I like the added control of setting up 2 meshCAM jobs, one for each side.

Thats how I did the chess piece above, and it sounds like it will work for you as well.

Just rotate 180 degress around the X axis.

That’s how I did my 3D cuts - by setting them up as 2 separate cuts as Apollo mentioned. I believe that method gives us a lot more control. And since you have to stop to flip the jig anyways, having 2 cut files doesn’t really add much time to the entire process.

For a contoured 3D shape where you’re using a ball-end cutter, you can set the Max Depth to the bottom of the stock, and choose Machine Geometry + with a margin just less than your cutter radius (i.e. for .250" cutter, choose margin of .124"). Use a tight calculation tolerance, and the cutter will just not “fall off” the edge of the part. There will be a slight cusp at the “parting line” (which doesn’t need to be level) but realistically you’ll have a little hand-smoothing at the parting line with any two-sided part.

The beauty of this is that you can even do hollow bowl-shaped workpieces, and machine the whole interior without a lot of excess machining around the outside (which is machined from the other side).

Randy

OK. I just got my new Nomad and set it up and chose to do this project first because I didn’t get the metal sheet for the wrench. Now I have another noob question. How do I remove the piece from the supports?

@Mark
We ran out of the Dibond sample sheets last week!
I just cut some more, I’ll get you a piece in the mail.

To remove supports, I use a bandsaw typically or for fine wax parts an exacto knife.

You could also use a Jewelry Saw.

I’m just now starting to play with the flip jig and have a couple of questions.

If you were running this as a 2 sided job (not 3D), instead of needing to center the stock in the jig with shims, can’t one just zero z to the new side after flipping the jig? For a 2 side job, you go to the full depth of the stock anyways (of course you’ll want a sacrificial piece under it). What am I not understanding?

Here’s a tutorial on using it:

Hope that helps!

While I appreciate the link back to the same place I posted this :slight_smile:, my point was that instead of running it as a 3D job, if you ran it as a 2 sided job. In the video for example that Darren Lafreniere did, he milled the fan that way. He did tho need to shim the stock to be in the middle of the frame, hence my question. Apollo mentioned he was going to do a do a Meshcam 2 sided machining tutorial (I presume with the flip frame) but didn’t get around to it. Thanks

@sshwarts
You can do it either way.

I prefer to have 2 meshcam files, so I can control each side of the parts tool path more completely.

If your stock is uniform, you can zero off the top of the stock for each side.

Your part should be most accurate if you set the zero only once. This is why it’s worth taking the extra time to center your stock in the flip frame and setting the zero in the center of the part.

Please post a picture of your part in case I missed something. I can demo the process for you, just post the details.

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I’m going through this now. I’m confused because if I attach the flip jig and screw it down (bolts forward, but doesn’t matter here), and use CM to “rapid move” to the center point (to set zero to dead center, as above), the center of my jig is left of center of the bed itself. I guess this doesn’t matter if I use the top center of my 2x3 renshape but did something change or am I overlooking something?

The jig is not centered in x (unless something has changed since my machine was delivered several years ago)

The y axis (front to back) center is critical and must line up with the centerline of the jig. This is what lets the sides line up when you flip the jig, since the jig flips over front-to-back. The x axis (side to side) is set for each job and, as long as it is not changed when the part is flipped, can be anywhere that is appropriate for the part, since the x positions do not change when the part is flipped.

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Got it done! Giant Robber for Settlers of Catan finished in Renshape!

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Finally had occasion to try this myself:

Did revise the MeshCAM file to use standard Carbide 3D numbering:

3D RENSHAPE 25 063.tps (2.1 KB)

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My version of 4-Sided…move and repeat (3 times)…Rough, Finish, Rest Programs for a LOT of programs (somewhere around) 32 programs…


03%20AM

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Cool that you’re still working on that! Surprised you didn’t fabricate a 4th axis.

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That’ll be one of my main focuses at IMTS!

Good memory!

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Mr. ApolloCrowe
I used to be an Adobe instructor for 4 years back in the 90’s, and I have to admit, this is AwEsOmE. If you don’t mind me asking, what’s your background?