Auto-Rebuild : model is always up-to-date.

The model will normally update when you add a new element or edit a parameter.

Click the icon off and on again to force a new rebuild.

Auto-Rebuild : model may not be up-to-date - see also Rebuild Now (below)

•It is possible to add elements

•If you edit an element or parameter, the model may not update to the state as defined by the new value of the parameter

Click the icon to force a new rebuild, or click the Rebuild Now icon.

Rebuild-Now: The model is up-to-date now

When the Fort icon is in this state, the model is normally up-to-date to the latest edit.

Rebuild-Now: The model is not up-to-date

To rebuild the model:

1.Click this Rebuild-Now to update the model to the latest state - the 'fort' should become 'erect and pink' (!)

OR

1.Click the Auto-Rebuild icon (above) to make the model always up-to-date

Large Model Tips:

•Make Auto-rebuild inactive. Then experiment. You can continue to add many elements successfully when rebuild is inactive. Use Rebuild-Now occasionally, and Auto-Rebuild every 4-5 commands to rebuild.

•Number-of-Steps : Make 90 steps, or even less. You do not need many steps as you build the model.

•Show Model in the Mechanism-Editor : You do not need to show the Solids to add elements, to review the kinematics or to calculate Force.

•Image Quality : If you need to show Solids, then experiment with the Image-Quality. You may need to save and re-open the model to update the Image-Quality. Do this when there are many Solids in the model.

•Spin-Box tool. In each dialog-box, do not use the Spin-Box tool. The model must re-calculate after each click, in a similar way to the Rebuild-Now button. Use your keyboard to enter new values in each data box.

Toggle Auto-Rebuild

•Toggle on and off at least one time to the always up-to-date state before you do important analysis with your model.