I have an older style EleksLaser A3 Pro laser engraver and wanted to share all the upgrades I did. I have not verified these upgrades will work on the newest version of the A3 Pro but based on pictures they should.
I have included .stl, .step & Fusion 360 file formats on my designs.
See "Upgrade Instruction.pdf" for more information about both the parts you need to print and hardware you need to purchase.
- A majority of the new hardware I needed were contents of a larger hardware kit I had previously purchased on Amazon (https://www.amazon.com/dp/B07MN9X2KN/ref=cm_sw_r_tw_dp_U_x_iU6bDbHXCZG5E). I think hardware kits like this are a great buy and way cheaper in the long run than spot buying fasteners for a specific project(s). The only hardware I sourced from my local hardware store was the M5x50 Bolts, M5x6 Button Head and M4 Nylon Lock Nut.
- You may not have enough nylon spacers from the original A3 Pro kit to do the y-carriage upgrades. I had just enough extras leftover from my original build even after replacing a few cracked spacers. If you do need spaces, I would recommend checking out these projects https://www.thingiverse.com/thing:3035351 OR https://www.thingiverse.com/thing:2501088.
- You will need to confirm the focus of your engraver after this upgrade since it moves the engraver away from the work surface. I wasn't sure if this was worth mentioning but for completeness, I figured it was worth it.
At the end of the day the out of the box laser engraver worked well and I used it for several months without any modifications successfully. The improvement you see from these upgrades will really depending on what you started with. I had an x-carriage that was way to tight out of the box and a y-axis that was to loose. I noticed the biggest improvement when engraving the same thing over and over and there wasn't any "shift" in the design on the work piece.
If there are any other upgrades/improvements you think I should try let me know in the comments.
I recommend 3 shells and 100% infill for all these parts since you do want some strength out of them. I used 0.3mm layer height for all my parts and they came out great.
PLA seems to be working fine for this application.