LPTPW Winter/Spring 2016 version

uli
uli
Joined: 6 Jul 11
Posts: 50
Credit: 3135506
RAC: 0

winning

winning

Pluto will always be a Planet to me.

David S
David S
Joined: 6 Dec 05
Posts: 2473
Credit: 22936222
RAC: 0

RE: RE: https://www.faceb


Must remember to look at this at home. Can't get Facebook at work.

David

Miserable old git
Patiently waiting for the asteroid with my name on it.

robl
robl
Joined: 2 Jan 13
Posts: 1709
Credit: 1454576596
RAC: 3176

RE: Rob - Question ? What

Quote:

Rob - Question ?

What brand of GT 770 are you running ?
I want to buy one as, it is far outperforming a 980TI !
A. Liquid nitrogen cooling ?
B. Overclocked to 9GHZ. ?

Bill

Bill,

Sorry for the delay but I have been living in 3d printer hell. When they say the 3d printer kits are not for sissies they mean it.

I am also surprised by this cards sudden performance increase. I recently changed the cards attributes to accept beta jobs. So I don't know if this bumped it up or not. They seem to complete faster but this does not account for the current RAC performance. I am expecting it to settle back to the 120K level at any moment. I would be "pleasantly" surprised if it maintains its current performance. Also ambient room temps here have been cooler so ?????

Its a GEFORCE NVIDIA 770 running 3 concurrent PM###### jobs and 5 LATeah### jobs. Its on an Ubuntu 14 box utilizing the 340.76 NVIDIA Driver. No liquid cooling. Single fan which exhausts out the slots backplane.

For years this card seemed to just barely keep up with the 650 then one day I made some changes and it took off. If anyone is interested in my config I will provide it. I don't believe I am doing anything brilliant. Just a lucky roll of the dice. Of course it could be the 340.76 driver. This PC is dedicated to E@H so there is no cross chatter.

Bill592
Bill592
Joined: 25 Feb 05
Posts: 786
Credit: 70825065
RAC: 0

Good Mornin Rob ! Thanks )

Good Mornin Rob ! Thanks ) Conratz on the new 3D printer !
Is the printer capable of printing out copies of the
camera housing you recently made etc ?

Bill

robl
robl
Joined: 2 Jan 13
Posts: 1709
Credit: 1454576596
RAC: 3176

Bill, It is capable of

Bill,

It is capable of printing the camera housing you referred too but I am not sure that I am. These things are not your standard HP. Ambient room temps effect the extruded filament so that it curves and pulls off the tray. And different filaments extrude at different temps and require different bed temps. It has been/is a learning process. You are dealing in 0.1 mm adjustments and your layers are also equally "thin". I am currently getting ready to heat the feed tube to remove some jammed ABS. I received a spool of PLA/PHA yesterday and want to start fresh. My current problem is that the extruder stops feeding filament mid print. The motor continues to run but it is not pushing filament into the extruder. Googling says this might be a condition where the hotend on the extruder is getting so hot it is conducting heat up the tube causing the filament to soften so that it cant be pushed. Yesterday I took it apart and noticed two blades on a cooling fan were "gone" (???). That explains the "funny noise" :>). I got a new fan locally and I am in the process of cleaning and reassembling. Stay tuned.

Bill, I suppose a simple "yes" would have sufficed. If anyone is interested in buying a kit I have some valuable info to pass on. Don't be afraid to ask. No, I am not an expert but I now know what I would want in a future cartesian kit. The "deltas" are another animal all together.

David S
David S
Joined: 6 Dec 05
Posts: 2473
Credit: 22936222
RAC: 0

RE: Bill, It is capable of

Quote:

Bill,

It is capable of printing the camera housing you referred too but I am not sure that I am. These things are not your standard HP. Ambient room temps effect the extruded filament so that it curves and pulls off the tray. And different filaments extrude at different temps and require different bed temps. It has been/is a learning process. You are dealing in 0.1 mm adjustments and your layers are also equally "thin". I am currently getting ready to heat the feed tube to remove some jammed ABS. I received a spool of PLA/PHA yesterday and want to start fresh. My current problem is that the extruder stops feeding filament mid print. The motor continues to run but it is not pushing filament into the extruder. Googling says this might be a condition where the hotend on the extruder is getting so hot it is conducting heat up the tube causing the filament to soften so that it cant be pushed. Yesterday I took it apart and noticed two blades on a cooling fan were "gone" (???). That explains the "funny noise" :>). I got a new fan locally and I am in the process of cleaning and reassembling. Stay tuned.

Bill, I suppose a simple "yes" would have sufficed. If anyone is interested in buying a kit I have some valuable info to pass on. Don't be afraid to ask. No, I am not an expert but I now know what I would want in a future cartesian kit. The "deltas" are another animal all together.


You have just confirmed my gut feeling that I DO NOT want one of these.

David

Miserable old git
Patiently waiting for the asteroid with my name on it.

robl
robl
Joined: 2 Jan 13
Posts: 1709
Credit: 1454576596
RAC: 3176

RE: Rob - Question ? What

Quote:

Rob - Question ?

What brand of GT 770 are you running ?
I want to buy one as, it is far outperforming a 980TI !
A. Liquid nitrogen cooling ?
B. Overclocked to 9GHZ. ?

Bill

Bill,

Well its now down to 210K. nothing has changed on my end other then the ambient room temp. Maybe a bunch of wing(men/women) completed a bunch of jobs all at once and the RAC shot up and now its settling back down. I don't have an explanation.

Bill592
Bill592
Joined: 25 Feb 05
Posts: 786
Credit: 70825065
RAC: 0

Howdy Rob, You're doing

Howdy Rob,
You're doing something Right there !

Bill

Good Morning everyone )

mikey
mikey
Joined: 22 Jan 05
Posts: 11980
Credit: 1834174224
RAC: 191599

RE: Howdy Rob, You're doing

Quote:

Howdy Rob,
You're doing something Right there !

Bill

Good Morning everyone )

Good morning Bill, and everyone else too!!

robl
robl
Joined: 2 Jan 13
Posts: 1709
Credit: 1454576596
RAC: 3176

RE: Bill, It is capable of

Quote:

Bill,

It is capable of printing the camera housing you referred too but I am not sure that I am. These things are not your standard HP. Ambient room temps effect the extruded filament so that it curves and pulls off the tray. And different filaments extrude at different temps and require different bed temps. It has been/is a learning process. You are dealing in 0.1 mm adjustments and your layers are also equally "thin". I am currently getting ready to heat the feed tube to remove some jammed ABS. I received a spool of PLA/PHA yesterday and want to start fresh. My current problem is that the extruder stops feeding filament mid print. The motor continues to run but it is not pushing filament into the extruder. Googling says this might be a condition where the hotend on the extruder is getting so hot it is conducting heat up the tube causing the filament to soften so that it cant be pushed. Yesterday I took it apart and noticed two blades on a cooling fan were "gone" (???). That explains the "funny noise" :>). I got a new fan locally and I am in the process of cleaning and reassembling. Stay tuned.

Bill, I suppose a simple "yes" would have sufficed. If anyone is interested in buying a kit I have some valuable info to pass on. Don't be afraid to ask. No, I am not an expert but I now know what I would want in a future cartesian kit. The "deltas" are another animal all together.

Well a breakthrough. After speaking with someone on a RepRap forum we were able to determine the source of my printing problem: a weak/wrong spring in the extruder. This caused the drive/feed gear to slip on the filament. Normally you would notice filament shavings but not in this case because the exerted force was too weak. I added a longer screw which increased the force against the drive gear. Problem solved. Here is a pic of the offending mechanism after the correction.

Some pics of the finished product follow:

top view of a 20mm cube (printed on painter's tape on a aluminum plate)

what went wrong in the following pic?

The fan that directs air on the object and print bed had been turned off. This caused an excessive amount of head on the extruded filament so it began to settle on itself (too soft). When I saw this I turned on the fan and and the print continued without issues. It is a learning curve.

here is a short utube video of the start of the print showing the filament moving through the "fixed" extruder. I had removed the fan and heat sync from the extruder (not the fan for the object/bed - the yellow part in the fisrt pic) in order to clearly see the filament path through the extruder should it mess up again.

Short utube video of this print

@David,

everything new has a learning curve and this really tested my patience but it should now proceed without too much pain, or at least this is my hope. I need to make another mod on the extruder before installing the heat sync and its fan. Then I should be good to go.

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