I am trying to design a recycling system for a fused deposition modeling machine. i am having trouble working out how the filament is made before being put on the feedback spool to be fed to the extruder. i am looking for the correct properties in which i can extrude the used abs into a filament of nominal diameter of 1.7mm, by properties i am looking for the temperature and pressure that is needed to extrude the abs, if anyone has any links or help on this it would be greatly appreciated. https://reprap.org/forum/read.php?1,71889,71889#msg-71889 Tue, 21 Jul 2026 09:11:21 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,71889,72268#msg-72268 https://reprap.org/forum/read.php?1,71889,72268#msg-72268 anon General Tue, 01 Feb 2011 08:40:33 -0500 https://reprap.org/forum/read.php?1,71889,72172#msg-72172 https://reprap.org/forum/read.php?1,71889,72172#msg-72172
... found some pages with the search mask "abs remelting degradation".

The degradation is much smaller than 30% (i remembered this when solving ABS in Acetone, i'm sorry for the confusion) and depends highly on processing parameters - so most loss occures when overheating while melting or extruding.

Whereas comercial remelting is made with lower temps and much higher pressures (so they can run with much lower viscosity), our 'low pressure'-extruders will damage the plastics much more because of overheating ...]]> VDX General Mon, 31 Jan 2011 08:49:07 -0500 https://reprap.org/forum/read.php?1,71889,72171#msg-72171 https://reprap.org/forum/read.php?1,71889,72171#msg-72171
thanks,

Will]]> wade.wpg General Mon, 31 Jan 2011 08:20:36 -0500 https://reprap.org/forum/read.php?1,71889,71892#msg-71892 https://reprap.org/forum/read.php?1,71889,71892#msg-71892
Another point is degradation of ABS by remelting - AFAIK it looses around 30% strength after beeing remelted a second time ... normally there will be add some 'old' ABS-granules to 'fresh' ones, so the strength won't drop so much ...]]> VDX General Thu, 27 Jan 2011 09:55:50 -0500 https://reprap.org/forum/read.php?1,71889,71889#msg-71889 https://reprap.org/forum/read.php?1,71889,71889#msg-71889 wade.wpg General Thu, 27 Jan 2011 09:32:26 -0500