Great video, very helpful! Can Ultem 1000 be machined with standard lathe insert tooling or do you need something sharper? Looking to hold 0.001” on a 5.5” diameter part. Do you sell Ultem as a tube? Thank you! - AJ
Thank you for your watching! Regarding your question, we also have numerous TECHTalk videos on machining of plastics, which may be helpful for you as well. Check them out! We also have specific machining guidelines on our website, under our Technical Resources tab. For machining Ultem and many other thermoplastic polymers, we normally recommend using uncoated solid carbide tooling with a neutral to slightly positive geometry. You want to cut the material, not drag across the surface. We don't recommend highly positive tooling designed for aluminum, as this will dig at the material and generate heat. Also, the use of a water soluble coolant is recommend to reduce heat, and help with tolerance control and to provide a better surface finish. Good luck!
When seeking a solid round rigid plastic rod extrusion, the rod needs to fit into a 17/64" female cap connector tip. I discovered the rod OD by using a drill bit that fit in to the female cap connect, so I figure the O.D. of said rod would need to be said 17/64". In speaking with a rod extruder via the email, the rod extruder can hold a +/-0.062" tolerance on PVC, PC and PP for, again, the 17/64" rod extrusion, Is this a good tolerance? Also, Do you have another video that could further explain solid round plastic rod tolerances? Thank you. Good Video.
Stock shape plastics are typically oversized so that a machinist can clean them up to the advertised dimension. Typical plastic rod tolerances are always dependent on material type and also the overall diameter. For materials like PVC and PP that tolerance seems appropriate. Some more extreme polymers that are more dimensionally stable will come with tighter tolerances. Many polymers like nylon, acetal, PPS, PEI, PEEK, etc. will have OD tolerances of +.003"/-.000" for rods under 1" OD. I am afraid that I am not aware of any other specific videos talking about rod tolerances. However.....tolerances on stock shapes would be another good topic for me to cover in the future. I'll try to add that to the list. Thanks for your interest and your comments!
Excellent, Thank you.
These have been great, thanks for making these
Glad you like them!
good info there for a rookie 3d designer, exactly what i have been looking for. Thanks!
Thanks Brian, glad it was helpful!
Great info and very well done!
Thank you!
Great video, very helpful! Can Ultem 1000 be machined with standard lathe insert tooling or do you need something sharper? Looking to hold 0.001” on a 5.5” diameter part. Do you sell Ultem as a tube? Thank you! - AJ
Thank you for your watching! Regarding your question, we also have numerous TECHTalk videos on machining of plastics, which may be helpful for you as well. Check them out! We also have specific machining guidelines on our website, under our Technical Resources tab. For machining Ultem and many other thermoplastic polymers, we normally recommend using uncoated solid carbide tooling with a neutral to slightly positive geometry. You want to cut the material, not drag across the surface. We don't recommend highly positive tooling designed for aluminum, as this will dig at the material and generate heat. Also, the use of a water soluble coolant is recommend to reduce heat, and help with tolerance control and to provide a better surface finish. Good luck!
When seeking a solid round rigid plastic rod extrusion, the rod needs to fit into a 17/64" female cap connector tip. I discovered the rod OD by using a drill bit that fit in to the female cap connect, so I figure the O.D. of said rod would need to be said 17/64". In speaking with a rod extruder via the email, the rod extruder can hold a +/-0.062" tolerance on PVC, PC and PP for, again, the 17/64" rod extrusion, Is this a good tolerance? Also, Do you have another video that could further explain solid round plastic rod tolerances? Thank you. Good Video.
Stock shape plastics are typically oversized so that a machinist can clean them up to the advertised dimension. Typical plastic rod tolerances are always dependent on material type and also the overall diameter. For materials like PVC and PP that tolerance seems appropriate. Some more extreme polymers that are more dimensionally stable will come with tighter tolerances. Many polymers like nylon, acetal, PPS, PEI, PEEK, etc. will have OD tolerances of +.003"/-.000" for rods under 1" OD. I am afraid that I am not aware of any other specific videos talking about rod tolerances. However.....tolerances on stock shapes would be another good topic for me to cover in the future. I'll try to add that to the list. Thanks for your interest and your comments!