replace every belt and pulley with GT2? (Page 2 of 2)

I tried various type of fishing line, in fact, Printrbot changed fishing line types and manufacturers a couple of times and sent out replacement over a period of time, but none really fixed the problem.  I think the best results were when I put a neoprene tubing sleeve on the shaft directly, and used the flat type fishing line.

Anyway, it always had problems.  The side walls in the print were never smooth, and for some reason, the taller print always leaned forward ("Y" direction).  Not a lot, but enough to be noticeable.   A year or so later, Printrbot came up with a couple of new versions of the PB Simple (Maker and Metal), and both changed to GT2 belts.  There were other changes in the little machine to be sure (new extruder, new rods, heated bed, etc), but the design remained the same.  The print quality is night and day over the old printer.

Anyway, you're right, if fishing line works for you, all the better, never did for me, but the belt system does.  Maybe one of these days I'll get off my butt and complete my ball screw printer build.  The I won't have to worry about belts at all.

Oh my god, I swear if these chinese sellers on ebay aren't the stupidest in the world!

I tell him I want the stuff shipped faster via DHL, says no problem. Then after several days after I made the payment he responds telling he misread my address and they don't ship outside of the US. he knows I need the stuff as fast as possible and wastes over a week with me explaining what I need several times and then keeping my money for another few days before he bothers reading the address, even though I had explicitly mentioned before that I'm outside of US.

Then I find another seller, seems to have what I need. I contact him, and no response, contact again, and again. Nothing for 4 days.
Then I compare the item images and it seems to be the same seller with dublicate accounts. Like WTF?
http://www.ebay.com/itm/5x-GT2-Aluminum … TQ:US:1123
http://www.ebay.com/itm/GT2-Aluminum-Ti … TQ:US:1123

Why waste my time. Why not say this is another store of yours? if you want to keep it as secret, why not say you don't ship outside of US again and pretend you're another seller.
How stupid are these people??

Does anyone know any other seller that has the two kinds of pulleys and belt? I've wasted more than a week with this fool.

And this exact same thing has happened with another ebay seller before when I was buying flanged bearings and LM8UUs...

Please link me to another seller on ebay that you know that has 5mm bore, 6mm bore pulleys and 180mm belt, I cant find any. Or some other site that sells it, or pm me and sell me yours if you have extra.

You could get a 5mm bore and drill it out to 6 (carefully).

... You're going to need 5mm bore for the motors. So what are your concerns? A fresh sharp drill bit will go right through aluminum.

Speed mart got two orders with 6mm bore pulleys thru to me in about 7 days, no issues.  So if it is a last resort, PM me and I will order more and send them to you anywhere at cost.  What country are you in?

I've asked mdrVB6 to order the two GT2 pulleys and belt and resend it to me because the seller was ignoring my every attempt to contact him. Thanks again, mdrVB6.
Hopefully I'll have them in few days and will test this theory.

Here's the first print (http://www.thingiverse.com/thing:528775) after the GT2 upgrade.  My banding on the front and back planes are back to as good as I ever had although there is still some room for improvement.

Will do.  BTW, I bought all my gears and belts (they *are* reinforced) from speedmart on eBay.  The 202mm GT2 was perfect for the 20T+40T combo but too big for 20T+20T and I couldn't find a 40T GT2 with a 6mm bore so I bought one with a 5mm bore and drill it out myself to 6mm (drilled with a 15/64th bit chucked into the tailstock on the lathe and used an adjustable reamer to take it the rest of the way since I don't own a set of metric bits).  I also had to knock down the rims a bit  to keep it from rubbing on the back panel.

Bam. Nice work!

Are you talking about the short continuous belt from the stepper to the 6mm shaft?  If so, I agree.  I could feel noticeable backlash when I grabbed the stepper pulley and wiggled the top pulley.  I could feel the belt moving back and forth between the front teeth and back teeth despite having quite a bit of tension in it.  This is what prompted me to look for something better.  Direct drive is probably even better but I thought I'd try the belt upgrade first.  I figure the long open belts connecting to the carriage would eventually wear out as well but they didn't seem to have any backlash, yet, that I could detect.  I replaced them anyway, though, as long as I had the printer open.  Probably will do the X axis, too, some day.

I also replaced the two pulleys and pulley holders on the front with a modified version of this (had to change the bearing surface to match the bearings I had on hand).  These are much stronger that the original and prone to less flex.