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Re: 0.9° Stepper - Worth it? - 29 days ago

QuoteDavid J I used them on my CoreXY printer - reduced the noise considerably. With good drivers there is no noise

Re: Moving Gantry CoreXY Printer - 3 months ago

Quotethe_digital_dentist I don't think I've ever seen anyone position a lead screw out of parallel with a guide rail, but for some reason, people seem to think it's OK to do that with belts. If I had to guess, it's because people think belts give them license to do whatever they want since it's purposely flexible. I instinctively made my belt paths geometrically correct when designing my printe

Re: Moving Gantry CoreXY Printer - 3 months ago

Quotethe_digital_dentist Hey, thanks! I've added this one to my collection of bad corexy builds. That is quite the wall of shame

Re: Klipper vs Marlin 2.0 on 32bit board - 4 months ago

Performance with either firmware should not be a limiting factor on 32bit boards. Personally I prefer klipper. One big reason for that is the absolute ease with which you can make configuration changes.

Re: -3DHex- a new 3d printer firmware - 5 months ago

Interesting feature list, I'll see if I can make some time this coming week to install on my spare RAMPS for testing

Re: Image to Gcode software - 5 months ago

I tried all of the free solutions I could find, web apps, software packages etc. The only one that worked more or less without any issues was this one: Always wear your safety glasses

Re: gen7 redesign like a gen 1.4b - 5 months ago

Best of luck. Traumflug was the only Gen7 developer active and seemingly ragequit from these forums a while back when people were questioning his stance on continuing to use the now discontinued LPC DIP chip iirc.

Re: A problem about printing a circle - 6 months ago

Looks like you've gotten better results. That line looks like the layer seam and you can make it less noticeable with slicer settings. totally different topic of discussion.

Re: A problem about printing a circle - 6 months ago

Do not add a spring to your belt paths that will create more problems. You want no spring effect in your belts at all. If the plastic pieces that hold your belt in place are too weak and flex or stretch if will act like a spring and cause print problems. You motor mounts, and the loops you zip-tie your belts to look like areas that allow for flex, you need a stronger design. For motor mounts try

Re: A problem about printing a circle - 6 months ago

The points I circled look like weak points where the plastic could flex Also I agree, your motor mounts look like they could allow for the plastic to flex. Flex is the enemy.

Re: A problem about printing a circle - 6 months ago

1. How do you adjust tension on your belts? 2. Have you verified your x-axis gantry is perfectly perpendicular to the y-axis rails? Once you tension your belts, some of your plastic parts may flex and act like a spring. When your printer is printing circles this will present as flat spots at the 4 points where motors will change direction, because it changes the force applied to the 'spring'. Th

Re: Hypercube Evolution CoreXY - Smoothie hates me!! - 6 months ago

Re: Hypercube Evolution CoreXY - Smoothie hates me!! - 6 months ago

switch the plugs between the x and y motors so X into Y and vice-versa. May have to invert direction settings in the config after that but should address your problem Edit: TDD explained it better than I did. I should read more thoroughly before I respond

Re: A problem about printing a circle - 6 months ago

Quotethe_digital_dentist It might be a good idea to post pictures of the whole printer... ^^This Make sure to show all mechanical points of possible interest. Carriages, pulleys, motor mounts, belt tension system, bed platform/leveling etc...

Re: A problem about printing a circle - 6 months ago

I was going to suggest you try to print a larger circle at very slow, normal, and fast speeds each to see if the level of distortion changes. I noticed a couple of possible weaknesses in your design that may allow for flex when the moving mass changes direction that could be contributing to your out of round circles. The belt geometry is another possible cause as TDD pointed out above. This o

Re: ExoSlide Linear Slides for 2020 Extrusion - 6 months ago

So, being a user of vslot+wheels for linear motion for 3 years now, I fail to see the reason for all the negative references to it. For me, it's been accurate and reliable. Maybe the sentiment is due to poorly made Chinese wheels? I have excellent accuracy and repeatability on my printer. Sure there are better options but they shouldn't be necessary in all circumstances. Or have I misinterpret

Re: V1 Engineering's Piper - 6 months ago

very interesting!

Re: Problem with Teacup and printing - 6 months ago

The REPRAP wiki has a wealth of information. Read, read more, and read more. You'll be happy you did. Here's a good starting point for calibration:

Re: Belted Z axis conversion for Ender-3 - 6 months ago

Quoteklcjr89 I wouldn't want to use a leadscrew as a shaft. You're right, 8mm steel shaft is readily available and cheap, no need for a leadscrew. My brain must have been misfiring. I updated my previous comment.

Re: Belted Z axis conversion for Ender-3 - 6 months ago

@Claustro For gears, I think these would work well (and provide a 1:30 ratio which should be sufficient, although I defer to Mark on that assertion): AG1-30R1J8 SWG1-R1 the 8mm bore means you could use inexpensive and readily available long pieces of linear shaft and 8mm bore belt pulleys instead of trying to source long pieces of 5mm shaft.

Re: V1 Engineering's Piper - 6 months ago

QuoteRoberts_ClifThe foreseeable problems include finding the smoothest EMT conduit possible, have never thought about smooth conduit before. Keeping the weight down of the hardware may not be a problem with dual XY steppers, though may come into consideration for other reasons... I had previously considered doing one of these builds. There is always the option of buying stainless steel tubing.

Oddball Thermal Runaway problem - 6 months ago

So I recently switched from klipper to marlin to do some laser engraving as klipper doesn't support rapid M106 commands. After my job was done, I figured I'd do some tests with Marlin before flashing my old firmware back. I noticed that once my part cooling fan kicks on it cools the nozzle and triggers a thermal runaway error. The short-term solution was to just limit the fan speed and continue

Re: Using custom RAMPS firmware to solely control temperature - 6 months ago

Why don't you just look into connecting pwm output from the kuka controller directly to a hot-end? Wouldn't that be simpler than writing custom firmware for a ramps to take custom commands output from the kuka controller?

Re: Klipper Bed leveling tilt vs mesh? - 7 months ago

Andrea, As you may have noticed, Klipper has been relatively ignored on this forum as Marlin and RepRapFirmware are the most popular firmwares in this community. Try klipper3d.org or klipper.info for information. Additionally, there is a klipper discord group where you can chat with other users of the firmware more directly.

Re: Soldering resistor onto A4988's ROSC pin - 7 months ago

I'd love to see(hear) the before and after

Re: Best X and Y Axis Design? - 7 months ago

What you are asking for sounds like a tall order, as stated above. Perhaps a good source of inspiration might be the MPCNC, R-CNC or Root 3 CNC designs (look on thingiverse). I don't think any of those would scale to the size you want, however they could at least provide you with a starting point. What materials are you looking to mill?

Re: Z Belt tensioner - how to adjust? - 7 months ago

I don't think there are many people here who are familiar with your specific part. However, if you post some pictures that might help.

Re: CoreXY 2:1 belt ratio double torque and resolution ? - 7 months ago

I'm not resistive to the extra pulleys. But like most things in life there are more than one way to solve any particular set of problems. Additionally, increasing resolution through the use of 2:1 gears would minimize the effects of any imposed backlash in the system which should only really manifest motor direction changes, provided you aren't using terrible gears that is. Also, matched sets

Re: CoreXY 2:1 belt ratio double torque and resolution ? - 7 months ago

Couldn't you just get some inexpensive brass gears and do the same thing that way with less cost and complexity?

Re: Does this CoreXY make sense? - 7 months ago

There is at least one 8bit firmware that improves performance with regards to the USB transfer speed limits however it does require the use of a Raspberry Pi.