Summary for delrin tumbling deburring Discussion
Deburring Delrin plastic parts by tumbling is discussed as a practical way to remove machine burrs from small Delrin AF parts. The original question from Paul Sawiski asked whether anyone had success tumbling these parts. AF Kenton first pushed for more detail about what Paul had already tried, noting that readers are unlikely to help if the question does not include the asker’s own findings. Robin Rhodes then described a working approach: a cryogenic tumbling process in which parts are brought to an ultra-cold temperature and blasted with polycarbonate media. According to Rhodes, the burrs become frozen and break off cleanly on impact. He said temperature, time, tumble rate, media size, and speed must be optimized, but once dialed in the process is repeatable, reliable, and cost effective. He added that some customers use the service externally, while larger volumes may justify bringing it in-house.
Q. Has anyone out there had any degree of success in tumbling small Delrin AF parts.
Paul Sawiski
machining cnc – Avon, Massachusetts
2004
A. Have you tried it yourself or not, Paul? Please start with your own situation and findings.
What we find at finishing.com is that people are reading your letter but will not spend their time responding if you don’t tell us what you tried and what happened, because the odds are high that their effort will be rewarded with a dismissive “we already tried that” :-)
Thanks!
Ted Mooney, P.E.
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
2004
A. Ted tells it like it is! However, quick short answer is yes and maybe end it there. There are some tricks and a lot of the processing depends exactly on what kind of a finish you are looking for. Meaning we need more info.
AF Kenton
retired business owner – Hatboro, Pennsylvania
2004
A. We have seen several machined Delrin parts from customers who were looking to remove machine burrs. We employ a cryogenic tumbling process whereby the parts are brought to an ultra cold temperature and blasted with a polycarbonate media. The burrs become frozen and break off cleanly when impacted by the media. Temperature, time, tumble rate, media size and speed are critical factors that must be optimized to get the best results. Having said that, once the process is “dialed in”, it very repeatable, reliable and cost effective. We have many customers who are saving time and money by using our cryogenic deburring services. If volumes are large enough, you can bring the process in-house as well.
Robin Rhodes
Worcester, Massachusetts
2004