MPMD - Budget Build Surface Upgrade ($2 Craft Mirror Attached with Glue)

READ THE VIDEO DESCRIPTION!!! Monoprice Mini Delta 3D Printer Budget Build Surface Upgrade The hobby mirror should be fine for PLA. I cannot promise you that it will hold up well for other materials. Check out my other videos to see how well this surface does after everything else is calibrated. ----------------------------------------- TL/DW: Zek Negus (from a Facebook comment) - "I have had success using thinned glue stick on top of the stock sticker and placing the glass on it. I cover the sticker well with the glue stick and then thin it out so it is smooth and even using a wet paper towel. I then place the glass on top and press it down while I twist it to provide better adhesion. I then turn on the bed and heat the glue to dry it before I print. It has only come off or moved on me when the glass has been hot and I have pried quite forcefully to remove a print." How well does this actually work? See my other videos for calibration steps and checkout the final results here (108 mm diameter print): https://cdn.thingiverse.com/assets/1c/90/56/76/f5/featured_preview_81224952_10157946633951407_1884648180813922304_o.jpg ----------------------------------------- Please do not buy a 5-inch mirror online, because that would defeat the purpose of this being a budget solution. They can be found for roughly $2-$3 at Hobby Lobby, Michael's, or Joann's Fabric. Otherwise, pay a bit more money for 120 mm x 3 mm borosilicate glass. https://smile.amazon.com/120mm-Borosilicate-Glass-Printer-Surface/dp/B075B1R9YZ/ ----------------------------------------- Opinion on Glass Retainer Clips: (note this rant mentions a thermal pad, which we're not using in the budget build) Just don’t do it. I’ll copy-paste the content of a Facebook comment here. The reason so many in this group are anti-glass-clip is because of the MPMD auto-leveling design. If it's working for your purposes, that's all well and good, but it may not be optimal if you eventually try to follow the calibration guides. Most of the bed leveling issues here stem from the switches being located underneath the bed. I.E., any material and/or gaps between the nozzle and the point where the bed switch activates can affect your leveling readings. Consider that an index card is roughly 0.20 mm thick and a sheet of paper is roughly 0.10 mm thick. Now compare that to the layer heights at which you print. It doesn’t take a whole lot to throw things out of whack. Any material added underneath the metal plate has to potential to prevent one or more of the three bed-leveling switches from triggering. Any material added on top of the build surface has the potential to get hit by the nozzle during certain G29 patterns and/or printing. If the clips are too loose, the extra wobble will contribute to inconsistent z-probe readings (i.e., it will adversely affect auto-leveling). If the clips are too tight, you may bend the glass into an un-level shape/surface (Young's Modulus for aluminum is slightly higher than even borosilicate glass). Thermal pads have better heat transfer. The glass bed can much more easily come loose in the middle of a print with clips versus a good quality thermal pad. Now, let's pretend for a moment that we've found some well-designed glass retainer clips that do not have any of the problems mentioned above. Let's ask some questions: 1. Do they allow clearance for the improved bed hold-down clips to be installed? 2. Do they need to be printed in a specific material in order to stand the test of time? 3. Did the original designer create them to be printed on a dimensionally accurate machine? This is a very big deal, because the vast majority of stock MPMDs are really terrible at printing dimensionally-accurate parts, especially compared to cartesian machines. Furthermore, you cannot count on any two MPMDs coming out of the factory the same way, so a simple scale factor may not suffice. Can you see why I refuse to recommend them? ----------------------------------------- Misc MPMD Information Full Calibration Guide and FAQ: https://www.reddit.com/r/mpminidelta/comments/bzm1s2/updated_mpmd_calibration_guide_and_faq/ Facebook Group: https://www.facebook.com/groups/mpminideltaowners/ Replacement Parts: https://gigdigit.com/ If you have questions, please go to either Reddit or Facebook (more active). YouTube is a crappy place to troubleshoot and you will find many other helpful people in those groups.

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