Thread: Some More CNC Projects

Originally Posted by chrisb691

Still some finishing work to tidy up, but Bitser lives.

This is my first cut, as a test piece on mdf. I sealed the face with a thin shellac, but the black (rattle can) got through to the mdf. So I have got to figure out that one. The ribbon still needs to be painted pink, but I am over the moon with it as a first attempt.

Wow Chris didn't even realise you had made a CNC guess I'll go check see if there is a thread. great first work

I was the same as wheelinround just had a look at the thread for "bitser"
Good looking cnc.
What tool and depth did you us on the part you just made? Look real good.

Russell

I used VcarvePro, so the cuts are variable depth and controlled by the software. As for the bits, the Butterfly, and the lettering, were cut with a 60 deg CMT laser bit, and the ribbon was done with a 90 deg V bit.

2nd test cut (about 230mm dia), and the silly grin is back. Took just over an hour, and I haven't started to push things yet. Just starting to get a feeling for feeds and cut depths.

Chris that is one nice piece very impressive Was this a design of your own doing or a templated piece.???

I await your piece when the boundries have been pushed

Edited added
Chris mind went racing to how that same design would look in a nice bit of Rosewood.

I got the crv file from a thread in the Vectric forums for free projects Wheelin.

I have the feeling that there is many more silly grins comming

Chris time to expand the CNC and add a fifth axis.

Stop stirring wheelin, I haven't built the fourth axis yet.

Chris,
From memory at the Melbourne BBQ weren't you a box maker or was that Geoff? I had to say from memory as that gives me an out if I'm way off the mark.
Anyway your design would lend itself to a circular box - say a compact case for the ladies or even a snuff box for the gents. I have done a quick and dirty on the attached to give you an idea. The lid would have a lip in the reverse design. Don't make your tolerances too tight as the friction will make it hard to open.

You would need to make a fixture to hold the lid to do reverse machining - a bit of MDF that you cut a circular hole in. Cut the hole then leave your machine setup and use double sided tape to hold the lid. Becasue you left the machine set up it should be perfect on X and Y axis and you only need to zero Z axis.

Just an idea to kick you along.

Originally Posted by chrisb691

Stop stirring wheelin, I haven't built the fourth axis yet.

I originally put in the reply 4th & 5th axis and I am not stirring I am serious I have been checking out 5th axis set ups these last two weeks.

Originally Posted by rodm

Chris,
From memory at the Melbourne BBQ weren't you a box maker or was that Geoff? I had to say from memory as that gives me an out if I'm way off the mark.
Anyway your design would lend itself to a circular box - say a compact case for the ladies or even a snuff box for the gents. I have done a quick and dirty on the attached to give you an idea. The lid would have a lip in the reverse design. Don't make your tolerances too tight as the friction will make it hard to open.

You would need to make a fixture to hold the lid to do reverse machining - a bit of MDF that you cut a circular hole in. Cut the hole then leave your machine setup and use double sided tape to hold the lid. Becasue you left the machine set up it should be perfect on X and Y axis and you only need to zero Z axis.

Just an idea to kick you along.

Thanks Rod, I have that in mind, and yes I am the wanna be box maker. Up to now it's been with marquetry, but now I have exanded my limits somewhat. There are a couple of nice cnc boxes on the Vectric forum, that I will also have a go at. Life is good at this point.

Hi Chris,
Good to hear you are travelling OK.
I'm sure you will put your mind to making boxes - I'm just being impatient.

Originally Posted by chrisb691

Still some finishing work to tidy up, but Bitser lives.

This is my first cut, as a test piece on mdf. I sealed the face with a thin shellac, but the black (rattle can) got through to the mdf. So I have got to figure out that one. The ribbon still needs to be painted pink, but I am over the moon with it as a first attempt.

Seal the MDF before you cut it with a clear coat that allows the paint to be removed, or just mask the entire thing. Then cut it and paint it as you did, removing the excess tape of wiping off the overspray

edit: even contact would probably work.