Solid-works online certification prep lessons

What is the most common nozzle size in FDM printers?

.4mm

While CAD Programs such as SolidWorks allow to print directly from inside the CAD software, the export of files is still sometimes necessary. What is the most common file type for exporting a part to a 3D Printing slicer program?

.STL

In partnership with 3D Systems, SolidWorks features an add-in that among many features allows you to print an assembly file in one piece. What is the add in called?

3DXpert

IN the SLA process, the resin is cured by what type of laser?

A UV laser

Prints from an SLA resin printer should be washed in a bath of what chemical to rinse away excess resin?

Alcohol

What is a benefit of using the Generative Design tool found in SolidWorks?

All of the above

When loading material into an FDM printer, it's best to let a little of the material run out of the nozzle, why?

All of these

Build plate leveling should be done how often?

Before each print

The use of bed adhesion materials in FDM printing can help parts stick to the plate during printing. What are two common adhesion materials used today?

Blue painters tape and Hairspray

If a part is too big to print in a machine, what is the best option to be able to print it?

Cut the model into smaller parts and glue them together after printing

The 3D Printing process in which a strand of melted material is pushed through a heated nozzle is known as?

FDM

True or False, Clearance must be modeled in at the CAD level in order for parts to fit together after they are printed.

False

True or False, Cura from Ultimaker and Perform from Formlabs can only be used on the Windows platform.

False

True or False, Increasing the number of triangles on an STL file will decrease the overall print time.

False

True or False, Once a part has completed printing, the remaining resin in the tank should be discarded because it has been used.

False

True or False, PLA materials give off an odor that is not pleasant to most people.

False

True or False, SLA printers are capable of printing different infill percentages.

False

The creation of advanced part structures is aided by what type of CAD design tool?

Generative Design

What 's the most common material used in build plates for FDM printers?

Glass

The arrow shown on the part below shows the direction in which stress will be the highest in the part. What orientation should the part be printed?

Highest stress point should be on the shortest side.

When using PVA as a support material, what is the best way to remove it from the finished part?

In a tank of tap water that has a moving flow

What is the benefit of using Near Field Communication (NFC) enabled material from Ultimaker?

It allows the machine to know what material and spool size is loaded in the machine

Scaling down a mating part will achieve what?

Make it easier to make that part to another because of the slightly smaller scale

If the part shown below is printed in the orientation shown will it require support material?

No

What are the different ways you can send a file to a 3D printer?

Over a WIFI network and by using a USB thumb drive

The Ultimaker machine featured in the videos utilizes a second nozzle that prints supports in PVA. What is the benefit of this type of procedure?

PVA is a water soluble so the supports can be easily removed

How should the layers of an FDM print be oriented relative to a compressive load?

Perpendicular

What is the easiest way to achieve a better quality print?

Reduce the layer height

The 3D printing process that uses a laser to harden liquid resin is known as?

SLA

As a general rule, when the overhang of parts geometry exceeds a certain angle, the use of what type of feature should be used?

Support

To ensure the proper adhesion of layers in the FDM process it's best to monitor the print for how many layers?

The first 3-5 layers

Sites such as Thingiverse are useful for 3d Printing in what way?

They host free CAD files that can be 3D printed

What considerations should be taken when storing unused PLA material?

They should be stored in a dry area

What is the benefit of having a heated build platform in an FDM printer?

To keep the part from cooling and warping

True or False, 3DExpert from SolidWorks and 3DSystems is free for anyone using SolidWorks.

True

True or False, A Raft must be modeled in the CAD model before sending the file to the slicer program.

True

True or False, Adding more triangles to an STL file will make the final part finish better.

True

True or False, Both the Ultimaker and the Form 2 machines allow you to add material at the mid-point if it looks like you will run out.

True

True or False, Increasing the quality of the finished part will take the machine longer to print it.

True

True or False, One of most common materials used in FDM printers is PLA.

True

True or False, Parts printed in a UV resin need to be post cured.

True

True or False, Round holes in parts that are perpendicular to the build plate typically do not need support material to ensure proper printing.

True

True or False, SolidWorks provides the ability to view overhang areas of a part that might require support structures to be added.

True

True or False, The Form 2 from FormLabs can only print in one color at a time.

True

True or False, The Form 2 machine can print a flexible material.

True

True or False, The"One Click Print" feature found in Formlabs Preform software includes the ability to automatically add structure supports where they are needed.

True

True or False, When printing a hollow part on an SLA machine, it is important to ensure there is a drain hole at the bottom of the part based on it's printing orientation.

True

The resin used in an SLA Printer is sensitive to what type of light?

UV

The arrow shown in the drawing shows the direction in which stress will be the highest in the part. What orientation should the part be printed?

With its shortest side touching the build plate.

If the part shown below is printed in the orientation shown will it require supports?

Yes

What are the benefits of using a dual extruder machine such as the Ultimaker?

a. b. c. d.All of the above (correct answer)

Which of the following should be done after the part has been removed from the build plate?

a. Any remaining material or debris should be removed from the build plate.

Which of the following is a method used to prepare the build plate of an FDM printer?

a. Applying blue painters tape. b. Spraying a light layer of hairspray c. Applying a light layer of glue stick d. All of the above (correct answer)

Which of the following is NOT a way you can send a print file to a 3D printer?

a. By downloading the file from a cloud server.

Which type of printer can print multiple materials simultaneously?

a. FDM

Which of the following will help ensure that a printed part will fit with the other components in an assembly?

a. If a part includes a 1 mm rod feature, it should be slightly undersized to fit inside a 1 mm hole. b. The print part should be allowed to fully cure before testing if it fits properly. c. Scaling a part uniformly can help it account for shrinkage and produce the correct final dimensions. d. All of the above (correct answer)

What type of material is NOT used in 3D printing?

a. PVC

Which of the following is a helpful method of being able to remove a printed part from the build plate?

a. Removing the build plate from the printer. b. Using a prying tool such as a putty knife. c. Incorporating a design feature in the base of the part that allows it to be removed easier. d. All of the above (correct answer)

What type of printer can print metal into 3D shapes?

a. SLM Printers

Which of the following will affect the final quality of a 3D printed part?

a. Scaling the part b. Part Orientation c. Setting the wall thickness d. All of the above (correct answer)

What does SLA stand for?

a. Stereolithography

3D printing technology is expanding and is now able to print metal parts.

a. True

A 3D print can be paused at any time if it seems that the material is going to run out. Once the material is replaced, the print can resume where it left off.

a. True

Additive Manufacturing uses much less material than many other traditional "subtractive" manufacturing processes.

a. True

Food items can be printed using a 3D printer?

a. True

If a print experiences an error, you can cancel it at any time to save time and material.

a. True

Native CAD files as well as STL files can be downloaded directly from the 3D Content Central site.

a. True

One method of accounting for shrinkage in the finished part is scaling the model in the slicer software before sending it to print.

a. True

Placing a Formlabs printed part in the Form Wash isopropyl alcohol bath removes the need to wash the printed part by hand.

a. True

SolidWorks's "Design Guidance" functionality produces much more organic and unique geometry than if modeled by the user.

a. True

Some 3D printer models have fixtures that mount and hold the build platform or easier part removal.

a. True

Some printers have a built-in webcam that allows you to monitor your print progress from a remote location.

a. True

Using an Ultimaker dual extrusion printer allows you to remove support material by submerging the part in water if the support material you used is water-soluble.

a. True

When prying a part off a build plate, you should make sure that any sharp edges are pointing away from you.

a. True

Emerging material tech is allowed for 3D printing to be used in what unexpected fields?

a.Consumable Food b.Space Travel c.Medical Implants d.All of these (correct answer)

If you need a part that can be subjected to higher temperatures, what type of FDM material is recommended?

a.Nylon b.ABS (correct answer) c.PLA d.PVC

What are some of the ways to move a file from the computer to the machine?

a.Over Wifi b.USB Printer Cable c.USB Thumb Drive d.All of the above (correct answer)

3D printers can only print parts that are rigid and unable to bend or compress.

b. False

All 3D printed parts will adhere properly when using superglue to hold them together.

b. False

Blue painters tape is considered the most difficult adhesion from which to remove printed parts.

b. False

FDM printed parts should have a drain opening to ensure that resin doesn't get trapped inside the part.

b. False

Supports should always be used for 3D printed parts on both FDM and SLA printers.

b. False

The last layers of a print are the most important-and you should prioritize watching those printed layers in person to guarantee that the printed part doesn't fail.

b. False

Whenever you load a spool of material into an FDM printer, it can be loaded in any orientation and the strand will feed evenly into the extrusion nozzle.

b. False

Which of the following is true of removing support material from a 3D printed part?

b. On an FDM printed part, setting the correct orientation of the part will minimize how much support material will be generated and then removed.

What type of 3D printer uses a pool of resin to create the solid part?

b. SLA Printers

What type of printer typically uses an enclosed build area?

b. SLA Printers

What does the 3D printing process "SLS" stand for?

b. Selective Laser Sintering

How many layers should you observe when the print begins?

c. 3-5

Which of the following is typically the most expensive type of 3D printer to purchase?

c. FDM

Which type of printer can print multiple types of material types together?

c. FDM Printers

Which of the following is true of adding material to a 3D printer?

c. FDM printers should push some excess material through the nozzle prior to beginning a print

What does FDM stand for?

c. Fused Deposition Modeling

Which file type is the most commonly exported from CAD software to be used in a slicing software?

c. STL

Which of the following should be considered when orienting the part on the build plate in the slicing software?

c. You should minimize the number of overhangs

The material for SLA printers is packaged in a .........

c. cartridge

Which of the following is NOT true of 3D printable files?

d. All CAD software titles can export 3D printable part files.

Which of the following does NOT influence how refined the 3D printed part will be?

d. All of the above

Which of the following is true about the "infill" of a 3D printed part?

d. Internal structures are automatically added in the areas where the part is modeled as a solid.