SoliForum - 3D Printing Community — bed temp help.

Re: bed temp help.

2015-02-08T17:57:43Z

strange thing happened. I have been printing with simplify 3d and a flashed cartridge for about 15 hours, with extrusion multiplier set at 2.0. now all the sudden I have to turn my extrusion multiplier back to 1.0. I am almost to the point of flashing to repetier because of their proprietary antics.

Re: bed temp help.

2015-02-07T19:59:04Z

I think I have figured it out. the extruder rate got cut in half from flashing. I used simplify 3d and changed my extrusion multiplier to 2.0 and it is back to printing great. It must be something to do with them trying to make it to where you have to buy their filament.

Re: bed temp help.

2015-02-07T17:47:39Z

I have determined this is all a result of flashing the cartridge. if I put in a good xyz cart and just run the amazon filament, it prints fine. but if I put in my flashed cartridge and run the amazon filament it doesnt print well. it is like the cartridge is messing with the extrusion rate somehow.

Re: bed temp help.

2015-02-07T04:59:00Z

georgehine wrote:

I am running some $20/kg stuff off amazon. do you think its a bad batch?

There is an old saying true for most things and especially true form filament. You get what you pay for. Although there are some exceptions. I use Shaxon filament from Fry's and am very pleased. It is 25 bucks a roll. But yes I would say you have a bad batch and it is just something that happens in this hobby. You can try to get a refund, but I doubt they will do it.

Re: bed temp help.

2015-02-07T04:56:40Z

I am running some $20/kg stuff off amazon. do you think its a bad batch?

Re: bed temp help.

2015-02-07T04:45:22Z

To be honest I threw away the white stuff that came with my printer. It is utter garbage and no matter what I could not get a good print. If you want the best printing experience with XYZ carts, buy the natural stuff. It prints very well for XYZ stuff. If you need something in color then just paint it with acrylic paint.

Re: bed temp help.

2015-02-07T04:42:24Z

So i have tried everything and I think there is something funky with the filament. I have printed about 40 meters just fine but now no mater what I change it comes out bad like there is not enough flow. I flashed my cartridge back to default temps but it still wont print good.

Re: bed temp help.

2015-02-07T01:10:43Z

Generally higher temps results in slightly more filament getting extruded. Poor layer adhesion for me usually means to slow flow - also accompanied by porous layers (beads don't fully touch each neighbor on each side). There has to be a way to change to extrude rate ("Flow" on Repetier-Host) - this is a critical knob to tune.

Re: bed temp help.

2015-02-07T01:01:00Z

does it push out less filament at higher temps? I tried the hotter extruder temp but kept the .3mm layer height and I was getting a saw tooth pattern as it was laying down each layer, I am still running stock software and firmware so I have no way to change the extrude rate. I think you are correct Carl if I go to .2mm layer it would have enough material to push the layer down. but that would increase my print time.

Re: bed temp help.

2015-02-06T22:35:56Z

georgehine wrote:

I changed my bed temp to 100 and it is not warping as bad however, now my layers are not sticking to each other. any ideas?

Raise your print temp to 235 and print .2 layers.

Re: bed temp help.

2015-02-06T21:34:09Z

I changed my bed temp to 100 and it is not warping as bad however, now my layers are not sticking to each other. any ideas?

Re: bed temp help.

2015-02-06T13:18:48Z

Depending on your bed type (PCB, aluminum, glass, mylar, etc) the answer will be different since the temperature on the top where the print sticks will be varying amounts different than what the sensor near the heater says. For example, I had been getting great prints until just recently when print after print would warp and distort. Finally solved the problem by reducing my bed temp from 115 to 100. I think 115 worked well while it was cold outside (my printer is in a shed which I generally leave the heat off to save energy). Recently, the ambient temperature has been a lot warmer and I think this is why I suddenly started having problems (delta from temperature sensor to bed reduced so my bed got too hot).

Re: bed temp help.

2015-02-06T04:42:44Z

Is your bed calibrated correctly using the paper method so the 1st layer is a bit "squished" ?

Re: bed temp help.

2015-02-06T00:27:37Z

georgehine wrote:

I have been printing little trays that are about 2.5" x 3.5" x .5 "tall and they have a 1mm thick wall and bottom. I keep getting warping on the corners. I am using abs juice and it seems kinda hit and miss on how bad they warp. I am ok with a little bit of warping but sometimes it is extreme and no conditions seem to change. I want to start playing with the bed temp but I dont know if I should go up in temp or down in temp. any help is appreciated.

I run my bed at 110 and have very little warping unless you really look hard for it. I also use Elmers glue stick. My current replacement head has similar dimensions and I have printed several with no issue.

Although now I have a flake of glass missing so the heated bed will be my next change. Just need some borosilicate glass and I will be good. I am just going to put it over the existing glass.

bed temp help.

2015-02-05T23:39:34Z

I have been printing little trays that are about 2.5" x 3.5" x .5 "tall and they have a 1mm thick wall and bottom. I keep getting warping on the corners. I am using abs juice and it seems kinda hit and miss on how bad they warp. I am ok with a little bit of warping but sometimes it is extreme and no conditions seem to change. I want to start playing with the bed temp but I dont know if I should go up in temp or down in temp. any help is appreciated.