SoliForum - 3D Printing Community — Problem w/ jam/thumping, x y print shifting and unfinished print? Look

Re: Problem w/ jam/thumping, x y print shifting and unfinished print? Look

2015-03-14T01:08:37Z

UPDATE ON THE PROBLEM OF THE SPOOL STICKING

I have seen many different ideas to fix this most of which call for you to make a new stand to hold the spool. I have been experimenting with ways to keep the spool in its original position. The solution that is working the best for me is a handfull of bbs from an air soft gun. They act as bearing and allow the spool to spin freely. It is working really well, I am even able to close the lid. I really like doing this to help keep the heat inside as it was designed to do. Only note, be careful when you fully open the lid.

Note To Solidoodle - Maybe incorporate three or four roller bearings under the spool.
Search ball roller bearing in Google for examples

Re: Problem w/ jam/thumping, x y print shifting and unfinished print? Look

2015-03-03T05:16:08Z

I had the same issue I am going to try putting a few ball bearings under the spool to allow it to rotate when the spool gets tight. I will do some testing and let you know the results. I would hope this is easier than making a new spool holder.

Re: Problem w/ jam/thumping, x y print shifting and unfinished print? Look

2015-02-18T19:06:35Z

neiledit wrote:

One has already been made.

Thanks! That one was just what I was looking for. Its not really economically smart to order solidoodle spools from the US as I live in Europe. I made a temporary spool holder by hanging a roll on the outside of the press. But this one is way more clever

Re: Problem w/ jam/thumping, x y print shifting and unfinished print? Look

2015-02-18T15:13:04Z

To rectify this problem I suggest you take the spool out of the machine and either make a stand for it or just unwind the filament manually (which is what I did and it worked, finally). I will be printing a vertical stand for it and I'll post the mesh in the forum if anyone is interested.

One has already been made. http://www.thingiverse.com/thing:644713

Problem w/ jam/thumping, x y print shifting and unfinished print? Look

2015-02-16T00:42:33Z

So I was having problems like many of you Press owners out there. Most of the problems were solved thanks to all the contributers in this forum.
However there still remained some problems with the actual printing. For example one of my first print job would not complete so only the bottom half gets printed. Another print there were some shifting in the print in the x and y direction. And of course I started getting some jamming issue. Thankfully the jamming issue was not serious and I was able to clear it by poking the nozzle with a needle and then reheating it to 250c. Now for the x y shifting I couldn't quite figure out what was causing those problems since I couldn't see anything that would cause any jamming to occur in those direction. Then I started thinking that may be it was the filament that is getting caught and preventing the extruder to move freely. And then thinking further that must be what's causing the filament jamming issue as well.

So the problem is that the way the Press was designed with the spool sitting flat is to me a fundamentally weak design decision. Because its laying flat if the filament gets caught on the side of the spool or you get to a point where the filament is really tightly wound around the spool, the spool itself can't rotate around to fix itself. And since the filament keeps getting caught the extruder motor is not able to feed the hot end or it causes jamming in the x y direction.

To rectify this problem I suggest you take the spool out of the machine and either make a stand for it or just unwind the filament manually (which is what I did and it worked, finally). I will be printing a vertical stand for it and I'll post the mesh in the forum if anyone is interested.