I think the heated print bed is upside down. I believe the Wiki for the Mk3 heatbed states that the Aluminum side should be facing up.by THE_SHRUB - General Mendel Topics
QuoteBill Clark there is a device called a "ball spline" that does what you are doing above. Typically a grooved round shaft with a bearing that allows rotation with linear travel. I am exploring the idea of using one to move an axis while eliminating the need to carry the mass of the stepper motor. I've looked into them before but so far I have not been able to find an off the shelf ball splineby THE_SHRUB - Mechanics
QuoteA2 Idea: To remotely drive the extruder use a flex shaft from a rotary hand tool, e.g. Dremel. I had this thought too, and while I have never actually tried it myself, my first thoughts are that flex-cable type drive systems are not designed for precision control. The reason why they lend themselves so well to the type power transmission a dremel flex shaft sees is because they operate at aby THE_SHRUB - Mechanics
Quotethe_digital_dentist I think it can be made to work. Even if mechanical losses are high, you can use a bigger motor and more current to drive it. If you had to you could mount a set of bearings in the gear to reduce sliding friction along the square rod. It may not be necessary to make the square hole in the gear all that close fitting on the square rod. The whole carriage is going to beby THE_SHRUB - Mechanics
Hi all, I've been working on this design on and off for the past 8 months now and although the design is not completely finished I wanted to post this up to see what you all think. From the start I have kept my expectations low for whether this system will actually work but I am really enjoying designing the system and testing my 3d problem solving skills. The extruder is designed to be utilizeby THE_SHRUB - Mechanics
Quotepettib Hi I can recommend buying it from 3dLabteK in Poland. I just bought my first printer from theme and i´m very pleased with that. They have an option that you can customise you own printer. And they are very good in supporting there customers. //Peter I can also vouch for the 3dlabtek kit. I used a different extruder and hotend however (using printrbot geared extruder with a ubis hoteby THE_SHRUB - General
Hi everyone. I'm sure I am not the only one who has had their hotend nozzle drag along their print as a result of overhang curl or print surface lift during prints. Although the best remedy for nozzle drag is to eliminate the previous layers curling and lifting to cause a collision, it sometimes seems like an unavoidable occurance. This problem gets even worse on 3d printers that have very rigidby THE_SHRUB - General Mendel Topics
Hi all, just wanted to update this post and say that I came up with a solution that reduced the cost and time required for adding YZ axis reinforcement. My I3 m10 Y-rods were slightly longer than required so I took advantage of this and mounted some angle brackets to the M10 rod instead of the M8 x-rods which appears to be the norm. This upgrade made my Prusa i3 SUPER rigid, and also gives me aby THE_SHRUB - General Mendel Topics
Hi all, I've had my Prusa i3 (single plate, no support wings) up and running for a number of months now and I have had some VERY good results. But I recently tried to print a tall part meant for an assembly and noticed that my z-axis is not square with my y-axis. I have searched the web and found only two solutions for my problem. The first is to print out a pair of Braces for the connection betby THE_SHRUB - General Mendel Topics
Hey all, I've been searching for ways to better improve my Prusa i3, and was wondering what everyone thought the top 5 upgrades others had printed to upgrades were?by THE_SHRUB - General Mendel Topics
Hey all, Update on my i3 kit order! I recieved all my required parts and I assembled my unit over the course of two days. I am very happy with my kit and feel I paid a fair price for my 3dlabtek kit. This printer is miles ahead when compared to my original printrbot Simple. Again, all the parts in the description were present and accounted for when it arrived and I am super happy with the end reby THE_SHRUB - General Mendel Topics
The x-ends are the single plate variety. I will try to work them out as best as I can. I am also considering inserting the new bearings with them already on the smooth rod, that way they are already aligned properly. Thanks for the advise! I will do these things and hopefully all will be wellby THE_SHRUB - General Mendel Topics
Hi all, I am currently building a Prusa i3 and I encountered a problem where the m5 z-nut will not seat into position on my x-end parts. I read somewhere that the nut can be "Heat fit" but I saw no mention on how to do this. Can anyone suggest how best to go about this so that I don't end up turning my parts into a pile of molten abs? Also, I think I ruined two of my z-axis linear bearings by fby THE_SHRUB - General Mendel Topics
Hi all, i was wondering whether anyone has had any experience buying kits from 3dlabtek? I recently ordered their mechanical prusa i3 kit and was wondering if anyone else has done the same? I have been talking with the owner sorting out details with my order and he has been very knowledgeable and helpful for creating my order. Although this is my first post on the reprap forum, I am not new to 3by THE_SHRUB - General Mendel Topics