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Re: nema17 dampers
Posted: Sun Feb 28, 2016 9:56 pm
by ErikAkia
Jules wrote:They've got one heck of a mark-up on those things. (I sure didn't pay $45 for the ones i picked up on EBay.)
Holy cow, I bought mine for 2.40 each. They came direct from China but I bet those others did as well.
Re: nema17 dampers
Posted: Sun Feb 28, 2016 10:07 pm
by Jules
Think I remember mine being $16 for four. (You only need two - sent the other 2 to insta for his stable of ponies.)
Mine didn't come with screws though - i think i just used the ones from the machine.
Re: nema17 dampers
Posted: Sun Feb 28, 2016 10:31 pm
by ErikAkia
I got mine through
http://www.robotdigg.com/product/341/An ... 17+stepper
I was a bit leery of the low price but the quality was good. I had to but a bunch of other stuff to make shipping worth while.
I remember thinking that I should get a big order and try and sell the extra to help lower the cost of shipping.
I am pretty sure they did not come with screws but I have so many that came with my printer (they used to send extra in the beginning) that I had enough.
Re: nema17 dampers
Posted: Mon Feb 29, 2016 12:37 am
by msmollin
In for 3 (figure 2 + 1 spare incase anything happens) from Robotdigg. Little weird they go thru a quoting process, but sounds like they're legit. Will post back once I have them installed!
Re: nema17 dampers
Posted: Mon Mar 07, 2016 12:22 am
by dramsey
I've installed, as recommended here, a Noctua 60mm fan in the power supply, and man, did that make a difference!
I've two of the NEMA 17 dampers, but before I install them, I'd like to know how to adjust the belt tension. It seems fairly tight and I'm not sure I could reproduce it by "hauling on the stepper", which seems to be the only way I could adjust it...
Or do I simply mark the motor position, reinstall the motor with the dampers, then use a screwdriver or something to slip the belt around the pulley?
Re: nema17 dampers
Posted: Mon Mar 07, 2016 1:58 am
by Jules
dramsey wrote:........ "hauling on the stepper", which seems to be the only way I could adjust it...
That's how I did it.
Re: nema17 dampers
Posted: Mon Mar 07, 2016 4:01 am
by jsc
It doesn't have to be ludicrously tight, and in fact pulling it too tight can cause the rail to bow making it seem like you have a dome in your bed. Just haul on the stepper to a reasonable tension.
Re: nema17 dampers
Posted: Mon Mar 07, 2016 4:36 am
by insta
I wedge my finger between the stepper and the frame. The squishyness of my finger combined with the pain I'm not willing to endure means the tension is just about perfect
Re: nema17 dampers
Posted: Sat Mar 12, 2016 5:00 pm
by scampa123
I just installed my dampers and they are great!!
So, like most others my fans are too loud!!
I tried to find 24v fans which are also quiet...but no luck yet!
Also, is everyone's Z noisy? Mine is! I tried greasing it and oiling the rods but it is still pretty noisy...Any fix for it??
Re: nema17 dampers
Posted: Sun Mar 13, 2016 6:04 pm
by dramsey
As you've discovered, 24v fans are hard to find. The solution is to use 12v fans, but to step the 24v down to 12v with one of these dirt-cheap "buck converters":
http://www.ebay.com/sch/i.html?_from=R4 ... r&_sacat=0