Extend path tool
I make carpets, and I alway need min. 10 cm extra design for fitting or if the carpet shrinkts in production. For Illustrator artwork, I need to extend all paths, smoothly or naturally outside the border of the design, without changing the existing design.
What I'd like is the bezier extension as shown in this clip from Vector Scribe plugin:
https://www.youtube.com/watch?v=zlriFIrSoDU

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There is also a script, which can help if you don’t have an AstuteGraphics subscription:
https://gist.github.com/S4K4K0/62896e92287b40fded0d7f1614082d22
Less powerful than ExtendPath tool form the links above, but free. -
Anonymous commented
I use the VectorScribe plugin from Astute Graphics. It has a tool for extending/reducing path length and it is really, really useful! My version of this plugin is now incompatible and I need to buy the new one. I don't think this is right. Illustrator should build-in these tools themselves. What are we paying a subscription for if we then have to pay more for extra tools to cover Illustrators inadequacies? The plugin also has a tool for eliminating unnecessary points which I use regularly. I am not going to pay for another plugin so I have to stick with Illustrator 2015 which renders my subscription completely pointless. ☹️☹️☹️☹️☹️