Makerbot desktop problems

[Anders Jensen]

Hello 

I have made a case in Sketchup, but when i open it on Makerbot Desktop, then it makes a "wall" in the case as you can see on the picture.

Why does makerbot create a wall, and how can i remove it?

You can also see my sketchup file.

Hope you can help.

[Dan Newman]

Sketchup is notorious for making bad STL files. Run the STL through
a cleanup program first. You can use the free online "cloud" service
from netfabb.com. However, it does use the Microsoft cloud service
"Azure" which will require you to make a free microsoft.com account
first.

Dan

[Jetguy]

As Dan pointed out, this was not the fault of the Makerware Desktop, you created a faulty model.

Here are the errors as seen by Netfabb. Notice in the picture the giant warning triangle and the HOLES are red!!!!

Same model repaired

Corrected file is attached

[Jetguy]

Another warning is required here. I have NO idea what size you intended. I opened your file in Sketchup and specified the units of mm and exported in mm as REQUIRED for 3D printing.

So, that said, this is 150mm or the absolute MAX buildable volume and in fact probably too large to be built on the average MakerBot for a number of reasons.

IF you meant for this to be 15mm diameter, then just scale by 10%

[Jetguy]

As you can see, after correcting the exported STL file it now sliced correctly in Makerware or any other slicer.

On Monday, November 3, 2014 5:54:47 PM UTC-5, Jetguy wrote:

[Jetguy]

You might want to read many of the blog posts about just this kind of error.

http://www.makerbot.com/blog/tag/sketchup/

[Ryan Carlyle]

I use Sketchup for all my modeling, and it's a pain in the ass to get manifold models out. Here are the critical things to know:

• Group your model and look to see if it has a volume in the entity viewer (from windows menu I think). Manifold models have volumes, non-manifold models do not. 
• Download the Solids Inspector plugin. It will tell you exactly where all your errors are if your model is not manifold.
• Download the Cleanup3 plugin. It will auto-correct most basic model issues and do a ton of cleanup for you (eg deleting redundant faces). 
• Avoid compound curves -- cylinders should not intersect other cylinders. Sketchup doesn't like that.

[Anders Jensen]

Thanks for the help and the fast answers. This site is awesome!! 

The size of the object should be small enough, but wenn I ad the raft, then it's going to be too big.. :( 

Is this a problem, and could I print the case without raft? 

[Jetguy]

I generally try to never use a raft.

 

What printer are you printing this on?

[Anders Jensen]

I use a Replicator 2

[Jetguy]

Per the machine config, you won't be able to print 150mm in y axis(front to back).

The listed build volume in Makerware per the Replicator2.json file is 148mm.

Further, if we get down into the start gcode section of the config, the G92 command overwrites the position as "G92 X152 Y72 Z0 A0 B0",

Well, if 0Y is the center of the bed, and 72mm is sitting at the Y endstop, and YOU CAN NEVER ALLOW IT TO HIT AND ENDSTOP DURING A PRINT, then max build size in Y is not even 148mm.

Again, the math and concept here is important to understand. 0 is the middle of the bed build space. 72mm is the location at the endstop per the software. If 0 really is the center of the bed, then the front edge is ALSO 72mm forward.

72+72 is only 144, and we STILL need to subtract at least 2-3mm to account for NOT hitting the endstop, thus giving you a real world 140mm on a good day of guaranteed usable Y axis space.

IF, you carefully move the object forward from using the center button in Makerware Desktop, maybe 5-10mm, you can better use the build space but like I'm trying to show you, unless you know these rules, no way can you print 150mm on the bed with no other actions.

Should be a real wakeup call to you owners of REAL USABLE volume VS software volume, VS ADVERTISED VOLLUME. NONE of them match up!!!!!