patterns/designs in surface with end mills

Creativechipper

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What sort of unique cuts designs surface textures can you creat with and end mill?

I have seen grooved spirals, rounded curved up facets...

Wondering how these were done and what sort of end mill is used for different patterns designs in the surface of stuff.
 

Creativechipper

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Per say your making a knob and you want to fancy it up a bit around the knob and on the pull end of the knob, just an example but not limited to this.
 

JimDawson

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Can you post an example picture(s) of what you have in mind? You can get endmills and router bits in many different shapes. I use carbide tipped router bits in metal all the time. The actual pattern produced would really be a function of the tool path. Using a CNC machine the possibilities are almost unlimited, a manual machine might make it more difficult, but not impossible.
 

homebrewed

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One common version of surface decoration is called "engine turning". It's typically done with an abrasive disk or rod held in a chuck or collet. Example: see here. For best appearance you want the swirls to be evenly spaced. Decorating a large area would be tedious unless you've got a CNC setup.
 

Creativechipper

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I have not started yet, but just wanted to know what bits can produce what patterns and what sort of procedure it takes on a manual lathe with a milling vice on my lathe.

Mostly do smaller ornamental stuff like drawer knobs, beads..etc
 

RJSakowski

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Boswell

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Another way to approach this might be for you to look through pictures like on google Images and when you see something you like but are not sure how to create, share it here and let people help you figure out ways to reproduce it.
 

Creativechipper

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Thanks for the replies , exactly the kind of help I was looking for....

Is there a chart with bits and pictures of what they do to materials with differing techniques?
 

Firstgear

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Cadillac

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Here’s some engine turning I did on the tunnel plate for my caddy. It’s 1/4 aluminum acts as a frame stiffener driveshaft tunnel and heat shield from the exhaust. Done on the Bridgeport with 2” sanding disc on end of dowel. No one would see this unless under the car. 7BFB2FBF-6C2F-4318-8622-66D786FD19C1.jpeg
 

Firstgear

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Here’s some engine turning I did on the tunnel plate for my caddy. It’s 1/4 aluminum acts as a frame stiffener driveshaft tunnel and heat shield from the exhaust. Done on the Bridgeport with 2” sanding disc on end of dowel. No one would see this unless under the car. View attachment 300478
That is awesome as well! What else did you do?
 

derf

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You mentioned knobs.....here is one I made for the pot on my VFD. It's kinda patterned after a witches hat knob on a Stratocaster.
DSC02079.JPG
 

Creativechipper

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So what tools and technique did you all use?


Like the interrupted flutes, knob, grips?

I see these designs but have no clue how to replicate them.

Feel free to post pictures of the tools Bits and describe how its done, PLEASE:cheerful:

I am looking to do a spiral and other textures and patterns that I can learn to increase my design potential.
 

Ben Nevis

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Here is a video of an attachment designed to do some of the things you might be interested in. Although this thing is too flimsy for metal, attaching a rotary table or a 5C spin index to your cross slide should work fine.

 

derf

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To do the interrupted "fishnet flutes" on the top picture, I used a tool like this: DSC02128.JPG

It's just a straight in plunge from the side, on the centerline using a spindex. The spacing between cuts, the depth and the amount of index will depend on diameter of the cutter and diameter of the work piece. It's best to work that out on a piece of scrap to suit your tastes.
The"dragon scale" flutes in the second pic are done with a 1/2" endmill, much the same way, but the cut is above center and a mating cut is done from the opposite side. Again, the amount of depth and index was specific to the diameter of the part.
The "Shark bite" grips were cut with a 3/16" endmill, just stepped on the height. It takes some math to figure the height of each line of cuts and the end of the cut.
 

BROCKWOOD

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All interesting methods & results! I did a cathedral style on this bass guitar bridge I made. Using a 2" cutter, I would pause, advance 5 turns on the cross slide & pause again. 20160725 047 - Copy.jpg
 

Creativechipper

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Good stuff, thanks for the info on tooling and techniques. I am sure thats just the tip of the iceberg.
 
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