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Author Topic: DELRIN  (Read 595 times)

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Offline jon b

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DELRIN
« on: January 28, 2019, 07:01:50 AM »
Not sure if this is the correct place for this post ?
Looking for advise on cutting Acetal / Delrin 12.5 mm thick . I im getting reasonable results at 20mm per second at 20,000 rev per minute 3 passed last pass .5 offset with a 6mm twin flute bit but Still minor chatter marks on the edge. The work piece is held down well so maybe a different cutter or feeds and speeds need adjusting ?
measure twice cut once !! so why is my bin always full

Offline ger21

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Re: DELRIN
« Reply #1 on: January 28, 2019, 01:34:12 PM »
What kind of machine is this?

That's very slow for 20,000 rpm with a 2 flute tool.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline jon b

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Re: DELRIN
« Reply #2 on: January 29, 2019, 06:12:31 AM »
Hi Gerry
im using a machine supplied from a manufacturer in Poland image attached. A robust machine that has proved to make money so far . I guess this is a learning curve , checking out high rpm slow feeds was a starting point i need to find the sweet spot for this material
measure twice cut once !! so why is my bin always full

Offline reuelt

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Re: DELRIN
« Reply #3 on: April 02, 2019, 06:26:58 AM »
Not sure if this is the correct place for this post ?
Looking for advise on cutting Acetal / Delrin 12.5 mm thick . I im getting reasonable results at 20mm per second at 20,000 rev per minute 3 passed last pass .5 offset with a 6mm twin flute bit but Still minor chatter marks on the edge. The work piece is held down well so maybe a different cutter or feeds and speeds need adjusting ?
Too slow
Use calculator @
https://pub.pages.cba.mit.edu/feed_speeds/
Delfin chipload is listed there too.

(sorry calculation is in imperial unit)
« Last Edit: April 02, 2019, 06:29:23 AM by reuelt »
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