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  • harari commented on harari's instructable 3D Printer Lead Screw Upgrade5 weeks ago
    3D Printer Lead Screw Upgrade

    Great! glad to hear you got it all working

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  • harari commented on harari's instructable 3D Printer Lead Screw Upgrade2 months ago
    3D Printer Lead Screw Upgrade

    Hi,There are a couple of things that I think might cause what you're describing.1. Your lead screw might not be straight. try and put a ruler or something else that you know is straight against the lead screw and see if there are gaps between them. (you can also roll the lead screw on a flat table and feel it, but you'll need to disassemble it for that)2. Your X axis might not be level. If you get good prints, then it's parallel to the bed, but they can both be offset. you can level your bed (with a spirit level) and then adjust the X axis heights accordingly, or the other way around - level the X axis and then the bed3. The lead screws might be dirty. I use silicone grease to lubricate all the shafts and lead screws, that might help.Does the squeaking happen at every height or only in...

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    Hi,There are a couple of things that I think might cause what you're describing.1. Your lead screw might not be straight. try and put a ruler or something else that you know is straight against the lead screw and see if there are gaps between them. (you can also roll the lead screw on a flat table and feel it, but you'll need to disassemble it for that)2. Your X axis might not be level. If you get good prints, then it's parallel to the bed, but they can both be offset. you can level your bed (with a spirit level) and then adjust the X axis heights accordingly, or the other way around - level the X axis and then the bed3. The lead screws might be dirty. I use silicone grease to lubricate all the shafts and lead screws, that might help.Does the squeaking happen at every height or only in a specific section of the rods?I don't think the orientation of the nut matters.I also thought no one will use it, and here we are, 10K downloads later ¯\_(ツ)_/¯Hope you figure it out!Daniel.

    Hi,There are a couple of things that I think might cause what you're describing.1. Your lead screw might not be straight. try and put a ruler or something else that you know is straight against the lead screw and see if there are gaps between them. (you can also roll the lead screw on a flat table and feel it, but you'll need to disassemble it for that)2. Your X axis might not be level. If you get good prints, then it's parallel to the bed, but they can both be offset. you can level your bed (with a spirit level) and then adjust the X axis heights accordingly, or the other way around - level the X axis and then the bed3. The lead screws might be dirty. I use silicone grease to lubricate all the shafts and lead screws, that might help.Does the squeaking happen at every height or only in ...

    see more »

    Hi,There are a couple of things that I think might cause what you're describing.1. Your lead screw might not be straight. try and put a ruler or something else that you know is straight against the lead screw and see if there are gaps between them. (you can also roll the lead screw on a flat table and feel it, but you'll need to disassemble it for that)2. Your X axis might not be level. If you get good prints, then it's parallel to the bed, but they can both be offset. you can level your bed (with a spirit level) and then adjust the X axis heights accordingly, or the other way around - level the X axis and then the bed3. The lead screws might be dirty. I use silicone grease to lubricate all the shafts and lead screws, that might help.Does the squeaking happen at every height or only in a specific section of the rods?I don't think the orientation of the nut matters.I also thought no one will use it, and here we are, 10K downloads later ¯\_(ツ)_/¯Hope you figure it out!Daniel.

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  • harari commented on harari's instructable 3D Printer Lead Screw Upgrade9 months ago
    3D Printer Lead Screw Upgrade

    Good question. I can say that at no point in the passing year had I thought that the upgrade wasn't worth it.Like I mentioned in the instructable, this wasn't a performance upgrade, but an experience upgrade. I found that the lead screws almost do not collect dust and dirt at all, they do not wobble and they do not make noises. I haven't had to clean the rods at all and I greased them once just to see if it does something (it didn't, but it's still good practice).I haven't found any problems with the coarser pitch, the resolution is still greater than what is needed for 0.1mm and even 0.05mm layer heights.I've attached some photos from today so you can see how it looks after a year of work without any real maintenance done.In conclusion, the upgrade removed the threaded rod problems and...

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    Good question. I can say that at no point in the passing year had I thought that the upgrade wasn't worth it.Like I mentioned in the instructable, this wasn't a performance upgrade, but an experience upgrade. I found that the lead screws almost do not collect dust and dirt at all, they do not wobble and they do not make noises. I haven't had to clean the rods at all and I greased them once just to see if it does something (it didn't, but it's still good practice).I haven't found any problems with the coarser pitch, the resolution is still greater than what is needed for 0.1mm and even 0.05mm layer heights.I've attached some photos from today so you can see how it looks after a year of work without any real maintenance done.In conclusion, the upgrade removed the threaded rod problems and didn't introduce any new lead screw problems. I think it was worth it (and it's not that much work, It took me a weekend from start to finish)Good luck!

    BTW, the instructable is almost two years old, but the upgrade is a few months older, if that makes any difference to you.

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  • harari commented on harari's instructable 3D Printer Lead Screw Upgrade1 year ago
    3D Printer Lead Screw Upgrade

    Hi,Thanks for the compliment, glad you like it.As for the Z axis taking forever to home, you can set the homing speed separately so that it would print normally and home quicker.I know the site you linked, but I don't trust generic settings. I found that if you do it by hand and calculate everything you'll get slightly different values and better fit for your setup. Setting calculators are good for quick basic calibration, but if you want to get to 0.005mm, there's not escape from manual calibration.It's not a hassle either, it takes a couple of minutes.

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  • harari commented on harari's instructable Add Wireless Charging to Your Smartphone2 years ago
    Add Wireless Charging to Your Smartphone

    Thanks! glad you liked it!The coil does not have to be perfectly round, but that might affect its efficiency.In fact, in many other applications that use this technology (i.e. RFID, NFC etc.) the coil is rectangular. i guess you can shape it as you wish as long as it's looped around.You might want to do some experiments and see how this affects the energy transfer.regarding the position, it works within a small tolerance of movement. this is why these chargers have magnets to align the phone.I saw some commercial chargers that use 3 coils instead of one to allow for more flexibility in positioning the phone on the charger. maybe a bigger coil would help too, I'm not sure.

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