Desktop Cnc Mill with a unique Tool Changer – Carvera Cnc Machine Review

This is the Carvera, a new desktop CNC mill from Makera that was released on a Kickstarter campaign. It's designed for PCB milling, plastic, acrylic, aluminum, relief, and 3D carving . Including an automatic instrument changer, a wireless height probe, a fully enclosed laser case and a built-in dust extraction unit. For accuracy, the axles are driven on linear rails that are driven by closed-loop servomotors and ball bearing linear actuators . 6mm and 1/4" clamps can also be supplied with the included tool. To work with the automatic tool change system, the bits must be supplied with plastic collars. Spare collars and a clamping tool are provided.

To maintain optimum height, the dust shoe runs on a spring-loaded linear rail. Can Also lock it out of the way or remove it completely.Dust is collected in a dust box with an internal filter.There is also an adjustable nozzle for cleaning and cooling chips.A compressor can be connected to the tube connector on the back of the machine.The device is managed by a controller,which serves to emit Modified by Smoothieware , it also offers USB and wifi connectivity and runs gcode directly from an SD card for greater reliability.Device measures 58cm wide, 52cm deep and 54cm high.Working area measures 36cm x 24cm with 14cm axis movement height L letter and clips on To work with the L bracket installed in a predetermined anchor position Anchor 1 or Anchor 2 and the L brackets and clamps are selected to fit different material sizes Although this is a desktop machine, it is very heavy, at 50kg or 110lbs, Makera provides a software To send a gcode to the device and control it.

It is compatible with Android, iOS, windows, mac and linux. A foldable arm is provided for mounting a mobile phone or tablet with the power provided by the USB socket. So without further ado, let's plug in the power and connect the USB cord to a laptop I will install the software on windows 10. There are three different ways to connect to the device from Carvera software first via USB second via Carvera built-in wifi hotspot The third way is to connect Carvera directly to a network your local wifi, Carvera has pre-installed many examples on the SD card , the first is an edge-lit LED and I'll start with a PCB and the example files can be accessed from the file management menu, in the directory examples the gcode is displayed on the screen and you can rotate, Zoom and what position of the origin can be changed by is selected by clicking X configuration anchor1 offset of 15 and offset AE 10 Scan margin Draws a rectangle around the path area with the laser on the wireless sensor The laser can also be turned on or off by double-clicking on the tip Sets auto z probe work piece z axis height usually d path origin is determined i will apply x and y offset of 5 and finally auto level this wireless probe is used to test The height of the material is in a matrix pattern, creating a height map, which is then used to equip the material with a fixed depth.

This is important in PCB grinding, because to obtain fine traces, bits are used to grind the copper layer. The copper layer is very thin and despite appearances, the PCB board is not flat and without automatic leveling, even a small difference in height will change the cutting width. I'm going to set a 5 x 5 matrix with a clearance height of 2mm sending a job to the machine with a push of trigger and the machine selects the wireless probe from the tool rack then it touches against the instrument touch sensor to set the correct instrument length offset The laser pointer draws a rectangle around the road area, which is Useful visual indication of where E goes into the mill probe and then touches against the surface of the PCB board, to zero the z axis and then into a matrix to create a height map, the probe is dropped back into the tool holder, the red light looks for obstructions and checks that the tool position is occupied , then the number one tool is captured. The tool is 60° 0.1 mm v the tool bit is blew against the touch sensor and the length of the offset tool is calculated The spindle is turned on and starts cutting traces in the PCB material then the tool is changed for 30° and its 0.2mm v-degree bit is blew against the touch sensor and the new tool is len gth offset applied this time to clean up some wider areas of copper next we will apply a solder mask and to allow easy access to the printed circuit board i move the hubs to the clearance position the copper is cleaned hence this is a good idea to check the tracks for continuity and shorts The short after that, the uv solder mask is applied and rolled flat and then UV light is used to cure the solder mask after that, we will silk-screen the solder mask with our laser already checked and ironed so we can turn off these options, the tool has been dropped 2 and then the empty tool holder is touched against the touch sensor and then the machine can set the correct height offset for the laser.

p welding of the copper pads using a spring loaded engraving tool and finally the tool was changed to a 0.8mm corn cob for milling holes and cutting the third adder I cut the tongues with dremel and soldered it afterwards, it is the base for the lit edge uses a light box of slates as a spoilboard this time the origin is set Action offset for x 15 and y 20 sec is pick up a wireless probe touches the touch sensor draws a box around the path area with the laser pointer scans the material to set the zero point on the z axis and also explores a matrix to create a height map then picks up a tool 4 which is 3.175 mm or 1/8" bit Single screw solenoid adjusts tool length offset and starts grinding The cause of the mess is I forgot to drop the dust shoe cover After that it changes to Tool 2 which is a 30° v bit then it changes back to the flute One shoe bit the dust picked up quite a few chips I cut out the tabs with dremel then made those areas flat the next part of the edge rake light is the acrylic display the panels are used as a spoilboard included they have some photo options, I'll try R2D2 work out o ffset is set to x 15, p 25 and leaves z probe on x5, y5 and auto leveling 5 x 5 matrix array with 2mm clearance height in it picks up the tool (2) which is 30° 0.2mm against the bit and then engraves the R2D2 image it is changed to the tool 4 which is a 3.175mm or 1/8" single screw bit then the screen cuts out the last bit From the edge-lit lamp is the touch panel, which is milled from 6 mm or 1/4 inch thick 6061 aluminum Work origin displacement x 10 y 10 The z-probe offset is left at x 5 y 5 and the auto-leveling matrix is set to 3 x 3 with clearance height 2mm Note that I didn't install tool 5 correctly, let's see what happens.

carvera

It picks up a tool 5 which is a 3.175mm or 1/8" single helical bit Now we can assemble the light and turn it on. Next is laser image engraving It is a 2.5W diode laser, which is suitable for engraving it will also cut some materials with a slower feed rate and multiple passes The laser diode is limited to directly engraving opaque materials and acrylic is not transparent and has glass It is a variable focus laser, but once you set it up you don't need Usually touched and this was set up at the factory. The empty tool holder is positioned against the touch sensor to adjust the height of the laser. And then it burns the image, Lightburn can be used to generate a Carvera gcode first, the Makera device is imported and then the com port is selected and the Makera device is selected, the laser mode can be triggered with the M321 command touching the empty tool holder against the touch sensor to set the laser height Since we are working outside a program Carvera, we should really be c we are careful not to send the z axis to the tool changer we can send the axes to the origin with g0x0y0 and set the laser to the correct height using G0Z0 we can then create a simple layout in lightburn I put the text and the box in two separate layers if we open a tab layer we can set different speeds and strength for each layer now we can press start the M322 command exits laser mode if we take a look at the device settings the commands are already inserted into the gcode start and end of the scripts.

But as I said earlier, if you start the job directly from the lightburn without moving the hubs to the correct position, it will probably cause the tool changer to crash. The script can be changed to do this but the best option is to create a gcode file from lightburn and then send it to the device using Carvera for that we can save the gcode and then upload the file to the SD Card Carbvera select the file and run it although the process is a little slower it is an environment Safer and less likely to damage the device.

Next, I will try to carve a carving on an epoxy board Unfortunately, I forgot to install the spoiler, you can see the results of that later. Work origin offset is X 3 Y 3 Z probe offset x 5 y 5 and no need auto leveling first select 3.175 mm or 1/8 inch single flute bit for roughing pass then 0.2 mm 30° against selected bit to pass finishing and finally back to bit Spiral cut- out ok, so epoxy board carved really easily but I had to wear a dust mask even with dust extraction on.

Now, I'm going to try out the 4th hub. There's a socket for it on the bed side of the table. The cable is then attached to the stepper motor and then attached to the table with 6 screws. The dust collector overlaps the 4th hub, so it's removed and then a block of epoxy is inserted into the chuck and done. Install it stock tail. Several tools are provided for chuck tightening Two bits have been changed to different sizes The approximate analysis code is loaded with an offset X 60 Y 0 inches With respect to the origin of the 4th axis, the position of the z-probe is fixed and disables the auto-leveling ed centered on the z axis at the exact location on the 4th axis and from Then the 3.175mm 32mm single bit spiral flute is selected next, the gcode for the end pass is selected We don't need scanning fringes and the 2mm by 22mm ball probe is selected and the nose is selected a bit , so this was my first look at the device, in general I'm really impressed.

It's solidly built with linear rails, ball screws, servo motors for precision, and some great features, like a tool changer, wireless probe, anchor point system, and dust extraction. If you are interested, Carvera is available as a Kickstarter but please keep in mind that Kickstarter is not a store, backers pledge money to help revive projects and in return they are given rewards, but there are no guarantees so hope this helps Thanks for watching, and see you again in the next time..

As found on YouTube

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