Here we will sketch out our step-by-step guide to building the ARTS 2.0 for the HardwareX article

Modifying the CNC

Writing about what changes must be made for the CNC to be compatible with the freezer.

Key-points	Status
Measuring	IN PROGRESS
Cutting to size	IN PROGRESS
Double-checking the fit	IN PROGRESS
Incorporating our own components New Base-plate Use Baseplate.dxf file to create component. The baseplate used made for this CNC was made using a platecutter and an 5mm aluminium plate. After the plate was cut, the 4 mounting holes showed in the DXF-file was drilled out using a pillar drilling machine, and a 5mm drillbit. Lastly, the rough edges around the hole was removed using a 6.3mm countersink bit. The plate was mounted to the CNC machine using soe existing threaded holes in the bottom of the y-axis beams. They were mounted through the rubber feet that came with the CNC kit, and four M5x25mm bolts were used. New support beam at the back To make the back support beam, start with a 20mm x 20mm aluminium extrusion profile. We used the rear crossmember beam from the CNC building kit. This is then cut to a length of 320mm using a band saw (or metal hand saw). The edges are then sanded lightly to remove rough edges. If liquid coolant was used during the cutting process, make sure to wash the beam. Next, some mounting holes needs to be drilled into the beam. This was done using a pillar drilling machine and a 5mm drillbit. Using a caliper, mark two lines 10mm and 30mm from each end, and at the centre of the beam (10mm from the edge). Then, line up the drillbit, and drill the 4 holes through the beam. Lastly, use a 6.3mm countersink drill bit to remove the rough edges around the hole. To mount the beam, slide it into place, and use 4 M5x30mm screws to hold the beam in place. ' New mount for the z-axis Clamping attachment Camera Mount	IN PROGRESS
Tips and tricks for making the modifying process easier. (Marking the axes with colors)	NOT COMPLETE

The CNC needed some modifying in order to fit into the freezer, and to mill in the way we want it to mill.

The first thing we did was cut the profiles and leadscrews so that the CNC would fit together.

Since the axes came pre-built with stepper motors and end-plates, we first had to dismantle it. To ensure that the right motors would be assembled with the right profiles, all pieces were marked with tape. Every piece from the first y-axis was marked with white tape, every piece from the second y-axis was marked with white tape, and every piece from the x-axis was marked with blue tape.

We measured the freezer and found that the freezer was ... cm wide and ... cm deep. We then measured up that distance on the x-axes, starting from the end of the stepper motors. We added an extra 0,5 cm for the end plate and and extra 0,5 as a safety margin.

We marked the distance with several rulers, and a square tool, and the areas to be removed were marked with tape.

We then measured how much material was to be removed from each of the profiles and marked the same length of material on the leadscrews.

The components were then sent to the workshop to be cut. The profiles were cut with a ... (Kappsag?) and the leadscrews were cut with a (vinkelsliper?).