# EricS5

• EricS5 commented on PenfoldPlant's instructable How to Slice Up a T-Rex in 123D Make2 years ago

The first number is the layer number. A second number will only appear if there are more than one part available for that layer.For instance, if you were modeling a saguaro cactus, you'll probably only get 1 number for the parts that comprise the base until the section where one of the arms start bulging out. Beyond that, you'll get two parts -- one for the main trunk and another for the arm. Let's say at that point, you're already at the 100th layer, the part for the trunk will be 100-1, while the arm is 100-2. If your cactus has two arms, then the trunk will be 100-1, while the left arm is 100-2 and the right arm is 100-3.But it's best if you study the automatically generated assembly instructions first. I use that one as a reference to find out where a particular part is located...

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The first number is the layer number. A second number will only appear if there are more than one part available for that layer.For instance, if you were modeling a saguaro cactus, you'll probably only get 1 number for the parts that comprise the base until the section where one of the arms start bulging out. Beyond that, you'll get two parts -- one for the main trunk and another for the arm. Let's say at that point, you're already at the 100th layer, the part for the trunk will be 100-1, while the arm is 100-2. If your cactus has two arms, then the trunk will be 100-1, while the left arm is 100-2 and the right arm is 100-3.But it's best if you study the automatically generated assembly instructions first. I use that one as a reference to find out where a particular part is located in the diagrams and where a part would go to, in the case where you get the XXX-YY part id.