Many users prefer to use their own colors, linetypes, lineweights etc. when drafting. HydraCAD is set up to do just that. The only thing you cannot do is to change our layer names. But, you can add your own layers if you want.
The best overall approach is to set up your own template, beginning with a copy of our template. Our templates have all the layers in them that we need to run HydraCAD. If you start with our template, make your changes to it and save it as your own template, you are not overriding the rules of ours, and we aren't stomping on yours after an update. This blog post explains how that should be done: Creating your own templates
Losing HydraCAD Layers
If you use AutoCAD's PURGE command all unused HydraCAD layers (along with other unused layers) will be removed from the drawing. This is bad.
Rebuilding HydraCAD Layers
Use the Rebuild Layer command in the Hydratools->Tools dropdown menu. Or, type in RBL. This will rebuild all of our layers with their settings. It runs the layer script file that comes with HydraCAD, or the one you created, below.
Going forward, do not use AutoCAD's Purge command. Instead, use our Super Purge, on the same menu as Rebuild Layers. Or, type in PUR. Super Purge does a deep purge of unused layer and blocks. It then runs our layer script file (layer.scr), which reinserts layers, blocks and dimension styles that HydraCAD requires to operate. Furthermore, it does an AUDIT to automatically fix drawing database errors.
Making a Custom Layer Script
Open a drawing that has the layers set the way you like them. Then, pick Create Layer Script from this Drawing from the HydraTools->Options drop down menu. That's it!
You will notice a command named Edit HydraCAD Layer Script just above it. This allows you to edit the layer.scr file directly. We do not recommend this, as script files are very sensitive to extra characters. Use the Create Layer Script from this Drawing command instead. The next time you use Rebuild HydraCAD Layers (RBL) or Super Purge (PUR), our layer script will be run with your custom settings, not ours.
If you make a mistake and some of our layers are missing or the layer script will not run or locks up, it is easy to get back to our defaults. In that case, use the Restore Original HydraCAD Layers command just below the Create Layer Script from this Drawing command.
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