13-Molding and Casting¶
Assignments¶
Group assignment:¶
- Review the safety data sheets for each of your molding and casting materials
- Make and compare test casts with each of them
- Compare printing vs milling molds
Individual assignment:¶
- Design a mold around the process you’ll be using, produce it with a smooth surface finish that does not show the production process, and use it to cast parts.
Learning outcomes¶
- Design appropriate objects within the limitations of your process
- Demonstrate workflows used in mold design, construction and casting
Have you answered these questions?¶
- Linked to the group assignment page and reflected on your individual page what you have learned
- Reviewed the safety data sheets for each of your molding and casting materials, then made and compared test casts with each of them
- Documented how you designed and created your 3D mold, including machine settings
- Ensured your mold has smooth surface finish, that does not show the production process (by postprocessing if necessary)
- Shown how you safely made your mold and cast the parts
- Described problems and how you fixed them
- Included your design files and ‘hero shot’ of the mold and the final object
The road map i made for this week can be accesed here
Individual Assignment¶
This week we were tasked with making a mold with the design of a 3d tool path.
Difference
2.5D toolpath- Straight z extrusion from a design
3D toolpath - Has to have different levels of printing.
Heres a picture our teacher made for us to understand the difference of the two.
Errors¶
1- First of all, I did not know about the whole 2.5d design requirement, so I made 2 of those designs
2- Then, I thought we needed to print the box, or needed the box with the design(not sure why, it was a dumb thought) so my designs have the box around them as well.
3- Then another mistake I made was trying it out on tinkerCad. It was easy to use, but I was more familar with fusion so the design for this didn’t go too well either, so in the end it was a waste of time.
I loged into TinkerCad here
Actual design¶
With the whole 3d toolpath required, in the end, I made a spear. I cut it from halfway so it can be cut.
Then my local instructor told me its a bit too plain, so I added a few extra designs. They were slopy, but I was running out of time so I just went with it.
The first one went like this
Then i remade the mouth because it looked it looked out of place
Designing¶
- Open the app first(MODELA player4)
- Import the design you want to cut on the wax
This is how my design looks!
- Go the the tool bar int he side and click one new process
- Keep these settings the same
- Access the roughing settings.
- Click on next
- Click on next
- Lastly click on finish
- Edit a few of the settings again before finishing off.
- Lastly, select ballnose
Heres a picture of the senior(past graduate of this course) who helped me
Cutting and Molding¶
Firstly we cut our design on the wax. We decided that all 3 of us would do it on one big wax so we could save the time of cutting it.
Heres how the cutting hturned out! Pretty good if I say so myself.
After that, we used the weight to mesure the accurate amount of mixture for the mold we were goung to make
Make sure to mix the two properly before pouring so there is nothing wrong with the mold in the end.
Heres the result of the mold finished being poured.
