ccm update3

docs/Computer-controlled Machining.md

@@ -169,28 +169,67 @@ Save a tap format (gcode) file and send it to the computer of the CNC machine. T
 You can click the clock symbol on the tool path taskbar and by setting scale and feed, simulate the time it will take for cutting that particular profile. This is not super accurate, but helps in approximating the actual time exclusing the material setup and cleaning later on.  
 ![](./images/ccm/14.time.png)  
 
-
 5. Machining
 ---
 First mount the sheet on to the bed of the machine. Align properly with the waste board.
-Using a power drill, drill in screws to fix the sheet. Do this within 20mm from the edges of the sheet, so the tool doesnt interfere with the screws. Also use countersunk screws so that the cap height remians flush with the material surface.  
+Using a power drill, drill in screws to fix the sheet. Do this within 20mm from the edges of the sheet, so the tool doesn't interfere with the screws. Also use countersunk screws so that the cap height remains flush with the material surface.  
+![](./images/ccm/screw.png)  
 
 Set X, Y origin at the left bottom of the sheet.  
+![](./images/ccm/xy.png)  
 
 Open NC-pro on the computer that is connected to the machine and check origin. I do not change X and Y as they are set already as default. To set Z origin, I use a tool sensor. By temp moving XY to 150,75, put the probe below the tool and set 'tool Measure'. This basically sets the Z at the top of the material.  
+![](./images/ccm/z.png)  
+
+Next, start the dust collector.
+![](./images/ccm/dustcollector.png)  
 
-Next, start the dust collector and on the remote, press 'start' and 'OK'.
+On the remote, press 'start' and 'OK'.
+![](./images/ccm/remote.png)  
 
+The spindle will start. The machine in the lab has a spindle regulator connected directly to it. So it doesn't use the setting from the gcode created in Vcarve.  
 Cutting should now start. My file took approximately 2 hours to finish. It is very shrill and loud, so it is important to wear ear protection.  
+The plunging created some burn marks in the holes.
+![](./images/ccm/plunging.png)  
+
+I noticed that the toolpath doesn;t optimise paths by distance. Unlike in a lasercutter it cuts across the sheet in random(?) order.  
+![](./images/ccm/random.png)  
 
-After cutting is done,
+After cutting is done, I unscrew the board from the base.
+![](./images/ccm/fin.png)  
 
-I found some pieces had to be cut again because they hadn't cut through.  
+I vacuum all the remaining dust that the dust collector missed and on inspecting the cuts, realise that the material didn't cut through.
+![](./images/ccm/oops.png)  
+
+With Steven's help, I chiseled off all the tags from the pieces and found some pieces had to be cut again because they hadn't cut through with enough detail.  
 ![](./images/ccm/16.redo.png)  
 
 6. Assembly
 ---
-Will do this part when I return to the lab.  
+The machined parts have very rough edges, so I first used a burring tool to smoothen them.
+![](./images/ccm/burr.png)  
+
+Used a file to clean joint details.  
+![](./images/ccm/file.png)  
+
+And a hacksaw to cut off remains of tabs.  
+![](./images/ccm/hacksaw.png)
+
+There were still chipped off corners, so I used an orbital sander with a grit 1000 to sand off all surfaces.
+![](./images/ccm/orbit.png)  
+
+Difference between sanded and unsanded parts:  
+![](./images/ccm/sanded.png)  
+
+This took up a lot more time than I anticipated, but the difference was apparent in the finished product.
+So this is important to do before assembly. I wonder if in the future I can make setting to omit sanding parts altogether.  
+Sanded and unsanded details:  
+![](./images/ccm/differnce.png)  
+
+I started assembling all parts together.  
+![](./images/ccm/assembly1.png)  
+
+
 Here's how it should look when done. (w/o the top surface)  
 ![](./images/ccm/table.jpg)