NoLimits Contruction Kit

NoLimits Construction Kit v1.3.5

©Copyright 2002-2004
Gravimetric Studios
Written by: Jennifer 'Tia' Lynn
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This tool allows to export NoLimits tracks as .3DS files.

It's very useful to create CTs for RCT3.

While the program was originally only commercially available, gravimetric studios themselves later made it free by releasing a dummy license to register the program, so I'm not doing any copyright infringment by releasing it here:
 

Nolimits Construction Kit: Commercial Use License
Name: No_Limits-Free@Construction.Kit
Code: m13959424-d11964450-QpmVtrT

(Can also be found as .txt file inside the download).

To register (and thus enable exporting), just open the software, click Help > Registration and copy&paste.

I also included a folder with some new track ties CoasterInc made for B&M tracks (useful to get the track width right, since NL uses 1.6m between the rails and track center, and RCT3 requires 1.72), plus some I made for the B&M inverted (it's just CoasterInc ones flipped) and for Arrow or Vekoma tracks.

All other tracks (Intamin, Schwartzkopf, etc.) can be exported as they are, with the default ties, since they don't need edits to the rail spacing.

When using it, keep on mind that there are some strange bugs concerning Con-Roll and inversions, mainly on loops and elements containing an half loop (immelmanns, cobra rolls)... remember to check the model for any weird track-work before exporting.

Source: https://www.coastercrazy.com/forums/construction-kit-is-now-free-t24384.html