CATI Tech Notes

SOLIDWORKS Tips and Tricks and Info on Professional 3D Printing with Stratasys from the Technical staff of CATI

Stratasys 3D Printing: FDM Part Curling – Lifting From the Tray

FDM Part Curling – Lifting From the Tray   From time to time, we see parts lifting off the build tray during printing.  There are two main causes. Both of which are related to air flow. If parts are positioned together tightly and air flow can’t move through the parts efficiently, it can cause parts to lift up. A  We also see part lifting in large flat parts. Printing in a SPARSE FILL will help with part curling. You can also see parts knocked over due to them lifting.     The 2nd possible cause is the chamber fans going out, which again, will impact air flow. All you need

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Posted in Digital Prototyping, Rapid Prototyping

Stratasys 3D Printing: Manual / Alternative Load Cell Calibration

Manual / Alternative Load Cell Calibration   In some cases, the Stratasys Polyjet desktop models will require a manual load cell calibration.  In the case where the load cell calibration wizard does not correctly, calibrate the weight using this method:   First off, remove all bottles and waste containers from the material bay.   In the printer application, select Maintenance > Calibration.     Select the Weight Sensor tab.  From the Cartridge list, select the weight sensor you want to calibrate.   From the Cartridge list, select the weight sensor you want to calibrate.   Then insert an unused bottle. In the editable field to the right, enter the value

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Posted in Digital Prototyping, Rapid Prototyping

Stratasys 3D Printing: Part Shift on FDM machines

Part Shift on FDM machines   Part shift is one type of part quality issue we see on FDM machines. There are several simple things that can be checked that may resolve the issue.     Here we see some examples of parts shifting.   The first and most simple thing to check is to  make sure the build plate is latched and secured.  If you have a Dimension 1200, Fortus or Uprint, check to see that the print head will toggle from side to side with only minimal resistance.   Next, check all the rods and belts in the build chamber to make sure they are not loose.   With the machine off, move the head around and

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Posted in Digital Prototyping, Rapid Prototyping

Stratasys 3D Printing: Soluble Support for V3 Polyjet Desktops

Soluble Support for V3 Polyjet Desktops   Soluble Support has been released for all V3 Desktop Polyjet machines.   SUP706 is a Support material that dissolves in a solution of caustic soda and sodium metasilicate and can be removed easily. To run Support 706, you will require an upgrade.  This is free of charge and can be done by users.   The easiest way to tell if you have a V3 machine will be to check to see if you have a pull tab to lift the roller bath suction straws (see below).           Once you determine that you are eligible for the upgrade, simply place a

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Posted in Digital Prototyping, Rapid Prototyping

Stratasys 3D Printing: FDM Printer Head Jams – A Simple Solution

FDM Printer Head Jams – A Simple Solution   If your FDM head is frequently jamming there may be a simple solution.   This can only be done on the Stratasys uPrint, Dimension 1200 and Fortus 250mc systems.   Over time, the Z axis will become uncalibrated.  This can happen by itself over time or be caused by reusing build trays.  The Solution is to run a Z calibration.  This will insure that the tips are printing at the proper height away from the part.  When the Z axis is off, the tips may print too close to the part causing the material to back up into the head.  

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Posted in Digital Prototyping, Rapid Prototyping

New Heads Filling Wizard Method

We have found that when doing a heads filling calibration there are extra steps that should be taken to ensure an accurate calibration. Manually changing the liquid level sensors back to factory values will help the machine calibrate the sensors accurately.  Do do this extra step simply enter maintenance mode then go under the Parameter Manager. Scroll down to Heads Filling. Then change the first four values to look like the values below. Then follow the normal Heads filling calibration procedure. Here is a link to heads filling Blog link- https://www.cati.com/blog/2016/06/head-filling-error-and-calibration-your-objet-desktop-can-display-an-error-related-to-heads-filling-while-it-is-printing/ Dave Murawski

Posted in Digital Prototyping

Prepping Your Objet Desktop for Move

Prepping your Objet Desktop for move When moving your objet desktop to another location please follow these steps to ensure that nothing will be damaged. The first thing you need to do is empty the machine of build material and fill it with cleaning fluid. You will find the Flush/Fill wizard under Options- Wizards.   After the cleaning solution is loaded, power down the printer. Then  lower the build tray by using a flat blade screwdriver on the lead screw located in front of the tray   Next, install the foam block that came with the printer   Then slide the print block over the block and raise the tray

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Posted in Digital Prototyping, Rapid Prototyping

My FDM printer has no power

On rare occasions your FDM machine may have no power and nothing you do will get it to boot up.  There are several causes of this fault.  It may be that your outlet is faulty or something is wrong with the machine.  Your first step should be to plug the machine into another outlet if possible.  Or plug something else into the machines outlet to verify that the incoming power is working.  If the power outlet is working then the next step is to check the thermal snap switch.  The switch is triggered when the machine detects a higher than normal temperature, or a power surge. Please follow the instructions

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Posted in Digital Prototyping, Rapid Prototyping

Restarting Printer and Host Machine

Restarting Printer and Host Machine                 Generally one of our first troubleshooting steps in order to fix a software issue on the machine is to restart the host and embedded machines. Please follow the steps below in order to perform this task. Navigate to the embedded computer inside the printer. You can tell that you are on the embedded computer because you can see a picture of the printer as the desktop background. If you are not on the embedded computer, press scroll lock twice, then enter. This should bring you over to the embedded computer. Exit the objet backend software by clicking the X in the top right corner.

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Posted in Uncategorized

Objet Prime Head Filling Timeout/Material Suddenly Not Being Accepted

Objet Prime Desktop units are capable of running Tango material.  The only desktop machine capable of doing so.  There is one slight downside to this.  Tango and materials are a bit thicker and have a different filter system that had to be developed.  The new filters are similar to the ones used in Eden / Connex machines.  Although the prime is capable of running tango there is still one issue that plagues the machine… and that is filter clogs.    Filters on the Prime tend to clog from time to time.  When a filter clogs it prevents material from reaching the print head causing a head filling timeout.  In the event

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Posted in Digital Prototyping, Rapid Prototyping

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