Quotewhosrdaddy Underbed sensing is really only suitable for stationary beds (think Delta's). You can always put a piezo between the carriage and hotend assembly. Works flawlessly on my P3 steel : Suitable ? How ?. For Delta, DC42 has a neat solution, a Wheastone bridge of strain gauges integrated in the effector.by MKSA - General
Don't worry, I understood. You were "confused" ? Your first step in the world of pain.by MKSA - Prusa i3 and variants
You just bought a piece of junk. Send it back, get reimbursed and if not possible destroy it to avoid entering a world of pain !by MKSA - Prusa i3 and variants
Here a typical example of bad use of regular nuts. Bad when the nut is to be inserted side wise ! One of the reason kits made with acrylic plates are worthless junk.by MKSA - CoreXY Machines
Just installed it on the MKS S base. So far so good. I never experienced any issue with T° spikes as described above but never paid attention either. This time I looked and can confirm that on Pronterface, no T° spikes for the hot end (230° PID 12V 40W) or the bed (60° bang bang 12V 100W), idling, X Y moving (Gcode to move in X Y quite violently) or printing.by MKSA - Firmware - experimental, borrowed, and future
How about looking in the Delta subtopic ?by MKSA - Delta Machines
QuoteOhmarinus QuoteMKSA QuoteOhmarinus Not all shafts are the same. I have Chinesium 8mm rods that are chrome-hardened and they bend slightly under stress. At the other end I have the same type of rod that was manufactured in the Netherlands and these are way harder to cut and bend way less. So there are many factors at play here, such as the thickness/deepness of the hardened layer. In fact noby MKSA - General
QuoteOhmarinus Not all shafts are the same. I have Chinesium 8mm rods that are chrome-hardened and they bend slightly under stress. At the other end I have the same type of rod that was manufactured in the Netherlands and these are way harder to cut and bend way less. So there are many factors at play here, such as the thickness/deepness of the hardened layer. In fact not much less, the modulusby MKSA - General
Frankly all these 3D printed parts are too flimsy often overcomplicated with many weak, flexible elements. Note their flexibility is often an advantage as it avoids binding due to poor alignment. The vast majority of what is found in Thingiverse is like that and perpetuates bad practice. It works, they say, indeed, see remark above. Oh yeah, they are far more elegant, better looking that bulkyby MKSA - CoreXY Machines
A simple regular Prusa bed heater is around 8 A at 12V. When switching and in case of improper wiring, ground loop will induce spikes that may be picked by the thermistor wiring and explain these T° jumps. A scope could show if they happen during switching (bang bang or PWM).by MKSA - Firmware - experimental, borrowed, and future
Quotesdavi Quotesinned I am pretty sure its getting noise from somewhere or there is the tiniest of connection issues. i dont have an oscilloscope to check Agnd, Aref, Vref. every once and a while after i get 2-3 layers into a print, the controller will spit out a heater fault but I dont have any more info to figure it out with. the fault message usually only appears on the paneldue consol, notby MKSA - Firmware - experimental, borrowed, and future
QuoteRewas You might find some good ideas for a belted Z from this build. I'm intrigued by his 5:1 pulley reduction versus a worm gear box for the Z axis. ONE Z motor OK but WHY TWO Y motors ???? And two linear rails for X gantry etc.... Too complex and costly for a Prusa. With the same parts, same cost better build something else.by MKSA - Mechanics
QuoteIcedStorm77 I am building a delta 3d printer. I have finished the printer frame and am just starting on the gantry carts and motors. Here is a picture of the printer so far, their is a 36" ruler on the left of the printer for scale. ..... Thanks, i am sure i will have more questions but thank you! Then how about posting them in the correct subtopic ? (Thanks to the person who moved this tby MKSA - Delta Machines
Quotekpgresk It looks to me like all elements that create words and figures are turned to maximum. Thus if anything is at your controller you won't see it i.e. black writing on black background. Try adjusting the pot on the back again until your printing blocks are toned down. You just woke up from hibernation ?by MKSA - Sanguino(lolu)
-It makes sense to have the "main" nut (that is fixed to the frame) support the weight of the bed (Note, nuts precision is the same, made with the same tooling !!!!! Statement above irrelevant). -If the set up is OK meaning there is no binding, the antibacklash mechanism won't be used. Therefore it doesn't make sense to use an antibacklash nut here.by MKSA - CoreXY Machines
QuoteFlyingRobot There is sort of a linear rail under; it is actually two pieces of plastic stuck on the wood to reduce friction, I also drenched it with oil to make it slide better. No worries, real linear rail on the way! I also did as you said, placing all the belts attachments at the same level. Finally, I solved my weird problem about the movement! It was two motor pins on the board that weby MKSA - CoreXY Machines
Quotethe_digital_dentist There's another option- use one motor and belt the two Z axis screws together. They will never get out of sync because they can't (at least as long as the set screws in the pulleys are tight). Why make it simpler, cheaper, better ? So much fun trying to fix issues one createsby MKSA - Mechanics
On the proposed schematic, The Mosfets are mounted to short circuit the power supply !by MKSA - General New Machines Topics
QuoteNathan_T I think to connect laser diode according this scheme. Using two parallel mosfets IRLB3034PbF: For sure you will get powerful sparks of light but not from the laser diode !by MKSA - General New Machines Topics
QuoteDark Alchemist That is the strange part because there is no kinks or bends in it but it does have spade lugs to go into the terminal so with the silicone wire I am not going to use them again. A poor crimp will lead to a poor contact that will worsen due to the heat cycles. Most failures occur at the contacts, not the wire itself unless grossly undersized.by MKSA - Safety & Best Practices
Thumb up. A CAD Japanese Zen gardenby MKSA - Look what I made!
Quoteleadinglights QuoteMKSA ............................................................................. So no need for "conversation", just build the prototypes and prove your points. ....................................... Hmmm, and I always thought that a forum was a place you come to discuss ideas, to have a conversation. I never realised that it is just a place to present a glorious andby MKSA - Look what I made!
QuoteApsu Nah. I tried to engage you in a discussion but since it's such an obvious mechanism you didn't read what I wrote, I will return the favor. Best of luck to you Listen, I don't need to read your explanation to see how it works. I can even tell you that in theory it works BUT I question your claims. So no need for "conversation", just build the prototypes and prove your points. Don'tby MKSA - Look what I made!
QuoteApsu QuoteMKSA What kind of test did you carry to back your claims ? I'm not sure you're following what I'm presenting here. The items I listed as potential benefits over a belted system are observations of facts based on assuming a well-executed build in terms of materials and mechanical construction. There's no testing required to note the advantage of a screw over a belt in the aspectsby MKSA - Look what I made!
QuoteApsu QuoteMKSA . A CoreXY is also a "differential" based system. I fail to see the advantages, as for issues, you noticed a few already. There's quite a few potential advantages if executed well. I mention a bunch at the bottom of the github document, but to recap: No long complex belt paths means less issues with tensioning/alignment/pulleys/tiny bearings/hysteresis/stretch/temperature.by MKSA - Look what I made!
. A CoreXY is also a "differential" based system. I fail to see the advantages, as for issues, you noticed a few already.by MKSA - Look what I made!
Quotejens53 Please note that no matter how heavy the rails and how light the head, there will be deflection. Conversely, any touching of the head to the build platform will produce deflection. The best you can do is have consistent deflection which you can compensate for. Indeed with such 8mm rods more than 310mm in length (bed) and a 1.1Kg mass, the plotted bed map will have a nice shape far frby MKSA - General