Draft it Help

 

Use Zoom Window zoom window button to close in on the area shown below. Now we will trim back both ends of the two longest horizontal lines, select the Trim button trim button.

further offsets and trimming

Click on L1 and then L2 and press enter key, these are the entities to trim to, and they are highlighted.  Now any entity selected will be trimmed to these two lines. Now click on L3 and L4 near to P1 and then at the other end near to P2.

more detail

Now to add numerous fillet radii. Select Zoom Extents zoom extents button. Now pick the Fillet button fillet button.

The relevant lines in the diagram to the left have been labelled. When instructed to select any of the lines it is important to select it near to the label so that the correct segment of the line is picked. You may want to use the various Zoom commands when adding the rest of the fillets to ensure the correct lines are picked and that the fillet is added to in the correct position.

more fillets

If you make a mistake when adding any of the fillets use the Undoundo button function. First we will add the fillet radius between lines 'L1' and 'L2'. Click on 'L1' then on 'L2'. The 'Trim 1st Line' and 'Trim 2nd Line' option in the Ribbon should be ON. Drag the radius dimension until the value reads '3.0' or simply type '3' and press enter key. The fillet radius should now be drawn and the lines trimmed.

Repeat the command using 'L2' and 'L3', the Distance Input should be locked at '3.0' so just click to accept. The same fillet value will be used on the next six corners so repeat the command and add a fillet to 'L4' & 'L5', 'L5' & 'L6', 'L6' & 'L7', 'L7' & 'L8', 'L8' & 'L9' and then 'L9' & 'L4'. Now add another fillet to 'L10' & 'L11' with a 2mm radius

. Repeat this for the other three corners of that rectangle and then for all four corners of the rectangle inside it. Now add a 1mm fillet to each corner of the small 'button' rectangle. The calculator drawing should now appear as shown below.

layout ready for button array