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Bart
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Printing without fan, is it harmful?

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The fan of my new printrbot simple does not work. I can submit for replacement parts. Is is harmful to try to print without a fan in the meantime?

Edited by: Bart ( )

I recieved a new fan and everything is now working perfectly. Thanks again for all the support. As far as printing without fan goes, i think you are safe and my jamming was due to other causes! Happy printing everyone! Bart

Bart,

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Billy
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Bart,

Printing with out a fan is perfectly ok. For what it's worth, the origin printrbot simple did not have a fan. It took me a few weeks to sort out getting my fan working properly. Did you check the fan extension connection? That's why mine wouldn't come on.

Print on,

Billy

Thank you for your answer! I checked every connection and I am sure it is in the right place. What was wrong with yours?

Bart,

At first it would not come on at all, then I was going to splice and soder the extension wire, but gave it one more try to get the connection and it came on. Unfortunately I had no control of the fan and ended up putting in a ticket for a new board. Printrbot asked me to reflash the old board but I had no luck and the did send a new board. Do yo have a multimeter? If so you can put the fan on manually and check the voltage. You should have 12v if you put the fan up to 100%. Also the fan is polarized if you have the wires backwards the fan will not spin. One other thing I did was tried the fan running off a 9v battery just to check if it was working.. Good luck Billy

Billy,

Checked with a 9V battery. The fan is dead, so I ordered a cheap replacement fan to see if that fixes the problem. Beware of not printing without a fan though! (see my comment at the top)

Bart,

Bart, I'm not sure why your hot end got clogged but I have printed with out the fan with out problems. What temp were you printing at?Have you put in a ticket for you fan issues yet? Billy

Billy,

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Ian Lewis
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Let us know how you get on.

I have to say, I've never had that trouble without a fan, but I never tried with a DD extruder

Ian

I disassembled the hot end by taking off the nozzle and heated the hot end. With anothe piece of filament I was able to push back the blockage. I've got to say, the Printrbot Simple is not as simple to setup as its name would suggest. However, all these little problems are fixable and teach you a great deal about the machine. That is something an assembled Simple / an expensive Ultimaker cannot offer :)

Bart,

I am not sure if it is due to the fan issues or just because I did somethign wrong in assembly, but I kept having problems. My nozzle got clogged again and again, and I broke the hot end trying to fixing it (physically broke it, snapped to metal, totally my own fault) so now I'm waiting for a new one. I checked the new fan, which also would not run. Even the 9v battery test didn't work. Borrowed a multimeter and found out that my fan-out on the board has 0 volts. The extension cable was OK. Guess I just need a replacement board and tweak my extruder / hotend assembly. Thanks for the responses guys :) BTW my printing temp is 195 degrees with PLA, and I have had some succesful prints, although my nozzle kept dragging through the print no matter how I calibrated the Z-axis motor and extruder

Bart,

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Ian Lewis
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Hi Bart

I would check the extruded amount when you're back and running, maybe you're putting out too much filament?

Let us know

Ian

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Billy
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Bart,

Have gotten the parts to get you printing again? If so double check to see if you have the bed nice and level and that you have the z stop set right. I was just looking at the notes from the first week after I put my printer together and that was one of the things I noted about the extruder clogging up.

Hope that helps,

Billy

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Bart
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I will get all the parts I need somewhere this week! I will let you know how I get on.

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Evan Almighty
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My fan just broke tonight. The blades part just tore off at the shaft. I tried superglue but it doesn't work. I've put in a support ticket for the replacement fan. Until then I'll do short prints without it. So far I've made a couple of parts and everything seems to be fine.

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Ian Lewis
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Hi Evan

Until it turns up, if you have a table fan or something, place it to blow across the print

Ian

Hi Ian, I went and bought another 40mm fan at the computer store. It's back in business. I was up the last 2 nights doing the GT2 belt conversion. I never realized how hard it was to replace the X-motor mount plate.

Evan Almighty,

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Billy
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Evan, Glad to hear you are ready to start printing again. Did you print your own parts to convert to the GT2 belts or did you get some kind of kit with all the parts? Billy

Hi Billy, I printed these 2 conversion kits: http://www.thingiverse.com/thing:194586 http://www.thingiverse.com/thing:194686 The GT2 belts, pulleys and Z608 bearings I got online. I think printrbot sells it too. Let me know if you need any help. My only advice is to make sure that your printer is calibrated. I was so cocky last night that I went ahead and took everything apart to swap the X motor mount plate. Well lets just say I had to do all kind of surgeries to it. Now that I got it up and running AND calibrated, I'm going to print out a new set of parts and go through the whole exercise again.

Evan Almighty,

Also I just now realized that my Y motor shaft did not have a flat notch in it. I was getting some Y slippage this morning and couldn't imagine why. Then I took the pulley and bearings out to inspect my set screws location and sure enough the shaft was completely round. I'll have to take that thing into work a grind a little flat to the shaft.

Evan Almighty,

Even, thank you for the info, I have the belts and pulleys on order and am waiting for them to come. I also ordered a 8x8 heated bed and I am going to print http://www.thingiverse.com/thing:242185 to bring out the y axis.I just need to get the smooth rods ordered. I'm going to use the same x axis conversion you printed on the xl upgrade I did a few weeks ago. My motors have the flats for the set screws so I'm good to go on that.. I can't wait to see the prints after all is tuned and printing nice...

Billy,

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wayno
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I don't know if you've sorted out your fan problem, but I thought I had a couple of bad fans and I just reversed the wiring and bingo....they both worked just fine.

Try it out.

w.

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Ian Lewis
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yep, in order to make sure the airflow is in the right direction, the fans are polarised to only work one way.

Ian

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