Machining Delrin

[jpfabricator]

I have a chunk of delrin on its way that's destin to become a bushing.
Are there any secrets/or pitfalls I should be aware of? Thanks in advance.

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[Firestopper]

Delrin machines like a dream. I made plenty of bushings from delrin that have lasted. The swarf is easy to clean up (bonus).

 

[chips&more]

VERY easy to machine!

 

[Groundhog]

I use a stream of air to clear chips and for cooling, not necessary though.

 

[grzdomagala]

Not 100% sure (could be i incorrectly identified the material) but reamers do not work.

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[Tony Wells]

Spiral reamers seem to do better, but boring is the way to go on Delrin. Straight flutes just push it into a polygonal shape then when you remove the reamer it springs back. It helps if the reamer is razor sharp though.

Jake, you'll love it.

 

[Randall Marx]

I love Delrin for machining! Sharp tools with lots of rake seem to be the key while keeping speeds moderate so the temp stays low.

 

[Ulma Doctor]

if you work delrin too hard, it will release formaldehyde and smell really bad
it makes excellent low speed, moderate load bushings.
it is a pleasure to machine delrin in any form

 

[carlquib]

I love Delrin for machining! Sharp tools with lots of rake seem to be the key while keeping speeds moderate so the temp stays low.

What Randall said, but I'll add use a fairly aggressive feed to keep it cutting. If the tool isn't sharp and the feed aggressive enough it will just melt.

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