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dear seniors, i have a few .dxf files which i want to get cnc laser cut. I had gone to a local cnc shop and showed them the files. They said the dimensions are all in inches and that they required the dimensions to be in mm. So they have asked me to get the files converted in mm. As this is my first time running autocad, I would like some help. I have understood a little from a few of the threads which contain things like converting from inches to mm etc. but the problem is that they have not showed a step by step procedure for it. All I could gather from the other threads is as follows (I don't know if its correct): if i have my drawing in inches and want to convert all the dimensions into mm , then i would want to scale the whole drawing up by a factor of 25.4, because 1"= 25.4mm. so for doing this : 1>I type "dimstyle" in the command box/space. 2>a window opens titled "dimension style manager" 3>I press the modify button on the right 4>another window opens in which i goto a tab called "primary units" 5>in the "primary units" tab I goto " measurement scale" and type 25.4 6>click ok 7>in the command box i type "units" 8> and select the INSERTION SCALE to be "millimeters" please tell me Seniors...if this procedure would be correct and that the cnc machine would cut the parts as per the drawings. hope to hear from someone soon.

Hello By a mistake i have drawn my drawing in millimeters. Thus when i print it in 1:1 it is to small . And when i click on my block and go to properties, I can't change the block unit it is grey market. is it possible to change that in centimeters ? Greets