The nut adapters are on the Github repository for this printer. They are part of the m5/m6 updates that I added, along with the couplers and some other bits. After printing the adapters, you may want to sand them a bit for a smoother fit. Why did you choose to remove the upper nut? It was put in there together with a spring to allow for anti backlash (similar to the original i2 design). Howeverby silpstream - General Mendel Topics
Sorry I took so long to reply. I was away on business and couldn't take pictures for you. Here are some picks of the M5/M6 modifications. Essentially only adapters and couplers. The thinner rods don't fight the M8 smooth rods as much for control (the newer i3 and other recent printer designs have been using a smaller diameter threaded rod for this reason). The coupler I used here is based on hopby silpstream - General Mendel Topics
The z-axis on my prints didn't stack up nicely when I had the m8 rods with the aluminium couplers. I didn't have this problem when it was an i2 and the steppers were on top. Since I had reused the parts from my i2, I figured that it might have been a design issue, and further reading seemed to tell the same story. I decided to swap to thinner threaded rods and a printed coupler. The m5/m6 partsby silpstream - General Mendel Topics
Wow! That looks awesome! Name it what you want, Diector Fury! Let us know how it prints. If you get trouble on the z-axis front, you might want to try looking at the m5/m6 mods I added. I found the aluminum couplers didn't work well in a compressed state as opposed to hanging on the original mendal, anf moving to thinner rods and a plastic coupler, based on nophead's design, helped a lot. I likby silpstream - General Mendel Topics
I didn't want to steal the actual i3's thunder so I named it Samuel as in "silpstream's augmented Mendel". By the way I added some parts for m5 and m6 z-axis rods as well as gt2 belt parts to the git repository.by silpstream - General Mendel Topics
I added some comments on parts to the wiki. Hopefully it is clearer now. The spring vs no-spring version for the LM8UU mounts is to allow for one smooth rod to have play so that both rods do not fight for control of the print bed. It helps with print quality. So one rod should only use 2 no-spring variants, while the other rod would use 1 or 2 springed variants. I use a 3 point support so have 2by silpstream - General Mendel Topics
Hi mcmasterp, If you already have an i2, then you have almost everything. Here's a breakdown: Printed parts: 1) Front vertex can be reused from the i2 if you don't want to have levelling screws. 2) Y-motor mount from i2 can be used. If you reuse your i2 y-motor mount, you don't need the 625zz bearing. 3) Belt clamp/mounting parts for the bed can be reused from the i2. 4) LM8UU mounts for the beby silpstream - General Mendel Topics
Hi Bowfanny, That's great, do update us on your progress. Can't wait to see it!by silpstream - General Mendel Topics
Thanks for the encouragement! All the laser cut parts are probably more precise, but I too like the simplicity of being able to build stuff with parts from a hardware store and a hand saw to cut things to size. I wouldn't take apart an i3 to build this either. However if you have your old i2 vitamins around, you may want to consider building to this with the parts you have lying around. After aby silpstream - General Mendel Topics
When you say until recently, you mean that it was working correctly before? If so, take take both your heatbed and hotend thermistors and connect them to the hotend just to run a temperature measurement comparison. I am assuming that they are both the same type of thermistor and are using the same thermistor table, if not don't bother to do this. If your multimeter can take temp readings also, adby silpstream - General Mendel Topics
You might want to check your thermistor table against the thermistor that you are actually using. It's a setting that most of the firmwares will need. Asumming you have one of the mainstream thermistors, you can find more information about it here: Also, you'll want to read the sprinter README.MD file for information on how to set the correct table:by silpstream - General Mendel Topics
Hi guys, I just wanted to start a thread for a Mendel upgrade that I built. you can find it here at: http://www.reprap.org/wiki/RepRap_Samuel Basically I had a Mendel i2, and would have really liked to get a new i3. However cost is an issue, so I figured I could redesign a set of parts to get my Mendel close to the i3 (i2a???). Samuel has a comparable build volume, and reuses the vitamins froby silpstream - General Mendel Topics