@ryan99alero What is the diam and length of the smooth steel rods on witch rides the carriage plus extruder and what is the weight of these ?by MKSA - General
Quoteryan99alero .... They vary from .01 - .022 mm. I thought from what I read on the sales slick they were suppose to be around .0003 for there deviation. ..... If the "sales slick" claims that, I would question ALL OF THEIR SALES TALKS ! Gee .... A breeze on their machine may bent it more than this ridiculous claim.by MKSA - General
QuoteVDX MKSA, have you read through the base description of my "floating islands made of garbage"-project, linked in my signature? This could be done with "DIY-concrete" and with some means of 3D-printing (more assembling preformed/preprinted elements) in "slightly bigger" dimensions Somewhat. It reminded me of the Aztec floating islands BTW.by MKSA - General
QuoteIamTheVector QuoteMKSA QuoteIamTheVector You badly misunderstood my question. I'm not talking about the theory of stepper motors. What I'm asking is. Is there a way to program behaviours in firmware? Like to write a condition and an action. If the end stop is pressed move the motor. If button is pressed open the mosfet. Yes it, is called "programming behaviors in firmware". You seem toby MKSA - Developers
Quotedlc60 We have a few "problems" in the world these days. This could be a game changer, if it really works out. DLC I fail to see how a house partially built with concrete poured in layers from a nozzle guided by a computer could solve even a few of the world problem ! Besides, not that much is 3D printed and so far I haven't seen real advantages compared with other techniques. "Help theby MKSA - General
This boils down to one thing: You can't "design" by asking basic questions on a forum. How about choosing a known good build and just copy it ? If you go through this forum, you will see that not one of the many projects initiated as you did, ever completed. Spare your time, money or "You're entering a world of pain" (The Big Lebowski)by MKSA - Mechanics
QuoteIamTheVector You badly misunderstood my question. I'm not talking about the theory of stepper motors. What I'm asking is. Is there a way to program behaviours in firmware? Like to write a condition and an action. If the end stop is pressed move the motor. If button is pressed open the mosfet. Yes it, is called "programming behaviors in firmware". You seem to badly misunderstand computeby MKSA - Developers
Quoteaamcle How big can I go? I know this is vague sorry, I looking at a box design (2020 + 2040 extrusion) with Ultimaker kinematics. This one :- I would replace the top and bottom extrusions with 2040 for added rigidity, I'd probably add a second Z axis as well and use metal to replace plastic were I can. Obviously building it bigger isn't that much on a problem BUT I've no idea how big Iby MKSA - Mechanics
Quotegregsaun Have you seen my Bear Upgrade frame for Prusa printers? Could maybe be a start for you. I am for now based on Prusa printers but I have seen lots of other builds. Don't hesitate to fork my project and always happy to help if needed. Please note that I am working on version 2.1 at the moment (check the dev branch) but the frame is going to be the same, only the parts are changing.by MKSA - General
QuoteECJ QuoteMKSA How about some pictures, schematic, video in operation ? I understand you don't want to have it copied and I understand you, so no need to give the firmware. Ad where I make available for sale: Specific to Ender 3 and CR-10: Sorry but hard to judge, no schematic and not in english. If you want to sell, it would help to give a bit more info.by MKSA - General
@pyr0ball I was asking for ECJ schematic and pictures... Indeed, as written before, the use of a microcontroller to treat the pizeo signal is the way to go in this digital age.by MKSA - General
Quoteaamcle My Cartesian has a bed that moves down. So far the only well supported builds I have found are the Hypercube Evo and the Voron both are Core XY and both are very expensive, with the most expensive linear rails. Good job but pricy.. Aamcle And be ready to spend even more than their initial cost as they are just so so. See the issues people are still having.by MKSA - General
QuoteECJ Quotekarabas QuoteECJ Quotedc42 The attiny processor ADC inputs are OK with any two of high resistance source, high capacitance source, and fast changing input. The datasheet gives the ADC input resistance as 100Mohms typical and a few pF capacitance. It was what I said two years ago here in the forum (https://reprap.org/forum/read.php?1,635075,760894#msg-760894), but it seems that someby MKSA - General
These wheels are simply unfit for the regular 3D printer. What is amusing is that once some guy started to use them, he got a lot of followers and Chines vendors quickly embrace it as the best invention since sliced bread and flood the market with an other generation of cheap crappy machines ! On the other hand, they make sense for a router (aka CNC likes MPCNC) where it is dusty and a few tenthby MKSA - Mechanics
A Delta is more demanding regarding build, parts ... It works or doesn't ! Any idiot can put together ("design" !) a Cartesian machine using cheap, crappy components yet produce something able to move a hot end and spit blobs of plastic in a not too random way. This ensures the buyer a lot of fun and time spent in "improvements". All this for a few bucks. It is a lot more fun than to try to assby MKSA - General
QuoteSeapeace Right, I think the filament melts in the throat and re-heating of the hotend cannot melt this solidified filament. Cooling is done by the fan blowing to heatsink fins and this fan comes together with the hotend; I suppose the manufacturer has made necessary calculations for it to be sufficient. The throat I am using has no teflon lining inside; I will try to use one with teflon aby MKSA - Printing
QuoteJamkas Alright, I changed now the position of the pulleys and omitted the tensioner on the carriage (I tensioned the belt by making slots instead of holes at the motor side and just pulled the motor while tightening the bolts. I doubt that this is good engineering but it seems to work). ..... Don't worry, IT IS ! On the other hand, looking at your machine ??????by MKSA - Stepper Motors, Servo Motors, DC Motors
How about presenting your idea first ?by MKSA - Crowdfunding Projects Announcements
Quotesberesfo Greetings, We spent hours searching with Google for this configuration (before posting) with no success. Thank you Scott And "Dorian" (https://reprap.org/forum/read.php?1,265113) is not likely to answer.by MKSA - General
@DD "The radial distance shouldn't matter at all as long as the angles are right. I wonder if the 2 degree eror isn't the cause of the lifting of the plate as the bed heats." In fact neither the radial distance (except 0) or the angles (of course the 3 "slots" meet at one point but can't be // that is meet at infinity) matter to constraint the bed. 120° and same radius are important to keep theby MKSA - Reprappers
BTW, why the OP needs 4mm ? Why give an answer without having all the info about what he wants to achieve. Besides, a guy who can't do a google search for "nema 17 4mm shaft" ????by MKSA - General
Nice automate ! Reminds me when I started !by MKSA - General
Looking at the ATP-5 bed and printer built, I am pretty sure it is the only thing that is square, flat and stays that way during "adjustment". Prusa table pictured above unlikely applies. An other thing, a flat bed is not enough, the nozzle tip must also travel in a plane and this one depends on the X Y guides. ABL may be the only way as it can compensate/hide all this.by MKSA - CoreXY Machines
A Prusa inspired delta ??? Like a cone inspired by a cube ?by MKSA - Reprappers
Quotecozmicray Quoteetfrench Actually, shoulder bolts were not designed for bearings although many people use them for this. Most shoulder bolt shoulders are .002" to .004" undersized which makes for a very loose fit in a bearing. McMaster-Carr has precision shoulder bolts which are -.001" to 0" and would be a better choice. What were shoulder bolts designed for? ?? Indeed, one of the purposby MKSA - Reprappers
Quoteders .. This is probably an elaborate excuse to stick to the standard build plan. Is using a four-point design that flawed? I see you have experience with this nature of plate. Do you think I should convert to three screws, and if so why would you suggest that they be placed at the midpoints of three sides of the plate rather than two adjacent corners and the opposite side's midpoint? Is thby MKSA - Reprappers
QuoteDiggrr I was pondering last night about spring pins, using a close fitting clevis or yolk with the same size holes to contain the bearing and pin. They're basically a spring steel tube with tapered ends made to drive into a dowel hole, but hold with outward spring tension instead of adhesives or an interference fit. Untried, but a thought none the less. It doesn't take a great deal of forceby MKSA - Reprappers
With ball bearings, the fixed part doesn't need to be a tight fit only the moving one. In fact it is better if it isn't as it makes assembly/disassembly easier and allows thermal expansion. Refer to manufacturer doc for details. No need to invent wrong or unnecessary complex mount. Here for the regular idler found in 3D printer, the bearing is and must be a tight fit in the pulley but not the sby MKSA - Reprappers