Finish on soft plastics

[magicniner]

I'm not sure in what way is a plastic likely to be "off spec" that would cause a surface finish like that, it looks more like a tooling/machine issue.

[Dean jeffery]

Well same as anything that needs multiple materials to make a product, add to much of this and not enough of that even down to shelf life.

Been sent that Plastic from the same place 5 times and 3 of which was crap, the first time used it was like the pic then the next 3 times crap and now decent again.

Same machine same same tool, same speeds and feeds.

[magicniner]

It's plastic causing the poor finish then, no doubt about it! ;-)

[Dean jeffery]

Yeah I've convinced myself the plastics the issue, but the customer is not willing to use another supplier because it's cheap.

[magicniner]

The cause of the finish defect has to be a mechanical one, if it's the plastic then it is somehow deflecting the cutter or machine from the programmed path.

[Dean jeffery]

Few weeks ago I made this from 6063 DOC was .5 1.5mm 3 cutter all I had

[magicniner]

6063 makes nice chips which clear easily, you're comparing apples to oranges and that won't help you to work out the source of the problem with soft plastics.

[Dean jeffery]

Point here was if machines out or tool deflection, then alloy is harder than the plastic I was cutting

[magicniner]

Point here was if machines out or tool deflection, then alloy is harder than the plastic I was cutting

6063 makes nice chips which clear easily.

If you don't understand that, your only option is to refuse the job unless he buys materials you like. :D

[Dean jeffery]

2mm thick black nylon seems to be hard to find, unless from direct plastics.

Customers are happy with a shit finish I'm not, and wanted to improve the quality of product.