problam with printing in Negative angle

hey,
i`h got big problam!
whan i have a print the requires printing in negative angle all the plastic in the perimeters is distorted especially in the corners.
its forming like a hill and its destroyer the print.\

what can i do to prevent this from happen again?

Edited 1 time(s). Last edit at 05/06/2012 07:26AM by moroz.a24.

thats a pic of a prat that i have a problam with

... read in the forums about "overhangs" and "support material" - either you need support material, to prevent 'printing on air', or you can reorient your parts (e.g. print them vertical) to prevent overhangs with more than 45 deg ...

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Viktor
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Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]

Call for the project "garbage-free seas" - [reprap.org]

If you're printing with PLA, a cooling fan will also really help with this issue.