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kolias
09-24-2009, 10:19 AM
Perhaps I’m in the wrong forum section but couldn’t find any more suitable.

I’m just starting as a hobby on wood engraving with my home built CNC router and my 1st projects are simple art work / sign making created in ACAD or downloaded dxf files which I cut them on the CNC with Mach3. I’m using a 1/8” upspiral bit but I find it not good enough on the small details. If I increase the model scale then this bit does a fine job but I would rather keep my models under one sq.ft in size.

Looking on the web I find several places selling various types of bits with much smaller cutting diameter then the one I have but don’t really know which one to pick. I would also like to keep the shank of the bits to 1/4” to fit my router. My cutting right now is on MDF or pine materials.

Any suggestion as to the type / size of bit to be used for MDF / Pine engraving?

Cant find any forum dedicated to CNC wood curving; any suggestion?

Nicolas

skyburt
09-24-2009, 11:04 AM
If you know anyone with a metal lathe, you can have a simple reducer made to take a smaller diameter shank that will fit your router. This would be a 1/4 rod drilled with whatever size cutter shank you would like to use. Then split along the length with a hacksaw.
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kolias
09-24-2009, 11:13 AM
Thanks Skyburt, I will give them a call

Nicolas

Big-tex
12-01-2009, 11:51 AM
I see where are you going with it.
I agree keeping tooling at 1/4 will give you additional tool stifness and less run off.
There are plenty of tools in 1/4 for engraving.
Also collets in 1/8 can be purchased here if needed.

http://www.precisebits.com/gateways/ColletsNutsHome.htm

kolias
12-01-2009, 05:52 PM
Thank you Big-tex

Nicolas

ger21
12-01-2009, 06:59 PM
How about this?

http://www.amanatool.com/ingroove/

kolias
12-01-2009, 09:10 PM
That's a nice system Gerry, thanks

Nicolas

Big-tex
12-11-2009, 08:03 AM
How about this?

http://www.amanatool.com/ingroove/

Yup those are nice, price is what is holding back people to buy em.
If you want to spend money go for it.
My .02 on those tools, it pays if you got income jobs coming and tool will pay itself .
Other than that for my personal use just for hobby ..... not needed expense.

ger21
12-11-2009, 08:33 AM
I didn't check the price before. The $45 for the tool body isn't bad, but $20 a cutter is a bit pricey. But in the long run, (and not that long, really), you'll save money over individual V bits.

kolias
12-11-2009, 08:38 AM
Yes they are very expensive for hobby use

Nicolas

dertsap
12-11-2009, 09:00 AM
nobody can beat the price that I sell these http://www.cnctoybox.org/store/page27.html

ger21
12-11-2009, 09:08 AM
nobody can beat the price that I sell these http://www.cnctoybox.org/store/page27.html

How do they work with wood?

jweinhold
12-11-2009, 11:01 AM
How about this?

http://www.amanatool.com/ingroove/

Intresting tool. I have had little success with tools that come to a point.

Check page 20 out; http://www.plasticrouting.com/pdf/OC-08CatalogR.pdf.

We have used these tools and they work very well (we now make them in house for our own use only) notice the flat area on the bottom a .005 makes all the diffrence in the world.

dertsap
12-11-2009, 07:36 PM
How do they work with wood?

they work quite well , they're extremely sharp

Big-tex
01-02-2010, 10:34 AM
I used similar to work in brass and did fine job. For wood I use 2 or 3 cutter V bits staring with 120 deg 90 60 and 30.