[TrickyCNC]

I want to make some bearing blocks and a leadscrew nut

I've bought a block of delrin, but just thought I check to see what the recommended feeds speeds depths and bits to use

before I go experimenting
Thanks

Rich

[jckstrthmghty]

I've never cut delrin but I've cut high quality HDPE. As others have stated it cuts like buter.

Using a 0.25" 2 flute upward spiral bit at ~10000rpm I cut at 50ipm taking 0.125" per pass with excellent results. I'm sure I can cut faster.

Wouldn't HDPE be a more suitable material to cut bearing blocks with? About 1/4 of the price of delrin with good tensile strength. Easily can handle the work of bring a bearing block even in lower grades.

[TrickyCNC]

I've never cut delrin but I've cut high quality HDPE. As others have stated it cuts like buter.

Using a 0.25" 2 flute upward spiral bit at ~10000rpm I cut at 50ipm taking 0.125" per pass with excellent results. I'm sure I can cut faster.

Wouldn't HDPE be a more suitable material to cut bearing blocks with? About 1/4 of the price of delrin with good tensile strength. Easily can handle the work of bring a bearing block even in lower grades.

Thanks

I already got me a block of Delrin to play with, It seems to be the material of choice for machining type things. I will see what else I can use it for too !
Rich

[Caprirs]

A little video I made years ago machining black delrin.

[ame=http://www.youtube.com/watch?v=Uh4JzgDrykg]CNC machining delrin - YouTube[/ame]

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[bobsch]

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[autobot]

let us know how good it smells and what it smells like during and after milling.

[rocketflier]

Making Acetal leadscrew nuts the easy way - The Home Shop Machinist & Machinist's Workshop Magazine's BBS

[ynnek]

delrin does stink a bit as it is being machined. It contains formaldehyde. But it machines like a dream.