ABS Shrink Ratio for printed parts

[abesau]

Has anyone done any research on what is the shrink ratio of ABS printed parts?
What percentage larger should you make design a part to ensure proper fit?

Thanks

[jimc]

it depend on the brand of abs. i know esun is 0.8% but i have seen others hit 1.2% or a little higher.

[curious aardvark]

I understood it was 1%

Though I never measured it. that would seem to be the average.

[Sebastian Finke]

ABS in general is between 0.4% to 0.8%.

http://www.misumi-techcentral.com/tt...materials.html
http://www.siddiqisons.com/shrinkage.html

The above are the results of a quick google. For my injection moulds I use manufacturer specific values that I get directly from Sasol, Safripol, etc.

[jimc]

The #'s i posted above is from actual testing of different brands of filament. You need to do some quick test because it does vary brand to brand. .8 is the lowest i have ever seen.

[curious aardvark]

sebastian - are you talking about injection moulded abs - or printer filament - which presumably will have slightly different formula and physical characteristics.