The Sovol printer draws too much current from the 3 Amp, 5.1 Volt adapter for the Raspberry Pi 3b so I was getting constant undervoltage errors from Octoprint 1.9.3. Also Cura 5.4 was a disaster, crashing the two extruders together at the end of a print along with other issues.
First I designed a 5 Volt USB isolator to stop the power stealing. These prevented the Sovol and Creality from drawing power from the Raspberry Pi so the undervoltage errors stopped. The next problem to solve was the out of bound warning when loading .gcode files to the Creality and the Sovol. The Creality Ender 3 had no ill effects, but the Sovol was doing ugly extruder crashes. Cura 5.4 seems to create additional problems for Octoprint The custom Cura Sovol 1.3.0 version is writing a wipe out line with relative positioning which appears to be the main problem. I have been editing the .gcode files before sending them to Octoprint with good results. Original end of file section: ;Single 01 end G91 ;Relative positioning G1 E-2 F2700 ;Retract a bit G1 E-2 Z0.2 F2400 ;Retract and raise Z G1 X0 Y240 F3000 ;Wipe out <----problem line G1 Z10 ;Raise Z more G90 ;Absolute positionning T0 G1 X-62 T1 <----delete G1 X362 <----delete G1 Y302 ;Present print After editing: ;Single 01 end G91 ;Relative positioning G1 E-2 F2700 ;Retract a bit G1 E-2 Z0.2 F2400 ;Retract and raise Z G1 Z10 ;Raise Z more <----moved up G90 ;Absolute positionning <----moved up G1 X0 Y240 F3000 ;Wipe out T0 G1 X-62 G1 Y302 ;Present print Select Dual Mode in Octoprint, but desired mode Single 01 or Single 02 on the printer. No more head crashes or worn out micro SD to SD card adapters! Now that I know this works I will implement it permanently by changing the End Gcode in Preferences/Configure Sovol/Printers/Machine Settings and verifying that it still works correctly.
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Printing results with Overture black PLA at 205C are outstanding. I swapped out the original Ender 3 build plate with the optional thick fiberglass plate. I use Matterhackers StickStick adhesive on it occasionally and parts just come right off after the part cools down.
I added some LED strip lighting to the printer powered for now by an external 11.8v LiOn battery. The bright warm white LEDs make observation of the print in progress easy on the light green fiberglass surface. Our built-in microwave oven started blowing the circuit breaker so we replaced it with a high-power countertop model. We didn't want to give up any countertop space so I had to design a custom shelf with a outside exhaust fan to replace the recirculating range hood. I will post pictures of the installation when it is finished.
This item requires supports so it has a solid area underneath. I used to use a pocket knife to pry under the brim which works for most PLA prints but not this one! It sticks to the hairspray on flex galvanized steel something fierce.
I stubbed my toe too many times and finally lost the cushioning between the joints so that it got very painful when the bone was hitting bone. I have talked to a lot of people who had screws implanted in their toes to stop the flexing. They all told me that they had excruciating pain and typically six weeks or so of recovery time so I was determined to avoid that. Just getting an ingrown toenail operated on one time was enough for me. I used Fusion 360 to design these toe splints. They don't cure the problem but I found they help reduce the pain level. The tricky part is getting the diameter perfectly sized since the toe can change size a lot due to swelling. TPU is flexible but not like silicone rubber so it won't expand. As I come up with other design ideas for this I will print and experiment with new ones. |
AuthorI love designing and building practical items to solve problems. It doesn't matter if I'm working with plastic, wood, aluminum, steel, electronic parts or just bits in a program. The creativity just flows. I also do gluten-free cooking to eat healthy as a celiac. Archives
November 2023
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