W5"New template"3D Scanning and Printing

:construction: This document is under Construction

  • in this week "The assignments", I, WE will:
  • 3D Printing & Scanning

    -Group assignment:

    Group assignment:Group assignment

    A-Test the design rules for your printer(s)

  • OK, We have 3 types of 3D printers in the lab, CR-10, Ultimaker 2+extended and Prusa MK3s.
  • the one that I am using almost all the time is Prusa, for all the specs and extra futurs that is avelable in it. I also have Alfawise u20 in my home, just as hoppy prinitng and so on.....

    Now lets go with prusa MK3s specs :

  • buiding space (25 x 21 x 21 cm)
  • filement size (1.75mm)
  • Layer height start from 0.05mm
  • support for a lot of materials PLA, ABS, PET, HIPS, Flex PP... etc. , we usally use PLA..... the nozzel and bed can also support all theis materals with a vorauity of tempretures
  • Heated bed
  • what else.... there are alto to like in this printer, and for more info please check this link: Prusa MK3
  • most of use are using Prusa for printing, so all the team agread to work and test prusa sitting, and what else to search on for STL file that the grate Thingiverse (All In One 3D Printer test)
    -This desgin will tes the following:
  • support test
  • scale test
  • overhang test
  • hole test
  • diameter test
  • bridging test
  • We are using PLA filament and 0.4mm nozzle:

    how to use the sclicing software Prusa Slicer

    first what are slicer softwares? they are a converstors from 3D bojects that we desgin in 3D desgin softwares like onsahpe and others to a layes taht the 3D printer can understand and work on..

    We are using this sitting for printing :

    witht the preivous sitting, the slicer is giving the followin needed time, materials info for the print

    Save "Export G-code" and go to the printer

    Please cehck the video about 3D printing the test object:

    Printing, layer by layer....

    after printing, we saw some probles with the finishing....

    As you can see, there are some thine lines between the parts flying,Scalling was not perfect as well. with error of 6% for X with fast printing sittings and 0.2mm layer hight

    almost all other things were good

    -Individual assignments:

  • design and 3D print an object (small, few cm3, limited by printer time) that could not be made subtractively:
  • 3D scan an object
  • ***(and optionally print it).

    -Individual assignments, lets start with the Desgining the shape :

    leys draw a triangle in the front surface:

    extrode it to 40 mm

    lets make the extruding in offset mode, so 40mm from the middle of the part will be extruded, 20mm to each side of the front surface

    lets draw this shape in ton of the design faces, within the skitch tools:

    then from extruding tool, choose remove option:

    lets make another working referace surface ,from front surface, and make sure that it is in the middle of the object you made:

    from skitch tools, lets draw this shape, make sure that it gose insde the hole in the first desgin, just remember to draw the new shape on the new surface you made

    extrude the new shape

    new, lets make the shape ore complex with the following steps(most of the next steps are using the same tools we used previouslly)

    Draw a triangle on this face

    then extrode it

    within te blue object, draw another traingle to make a hole

    let the hole cut throu all the blue shape

    another on insde the blue object to make a multi connected holes inside it, this holes will help to connect the selver shape parts together within the blue shape

    lets extrde the selver shape

    now, selver shape almost tuoch the ground

    we need to add a base for the selver sahpe, so it can print the shape on it

    here, the base, form rwaing a traingle and extrude it to the selver shape

    as you can see, slever shape go through the blue shape in many connctions and links

    this type of connections and link within 2 parts in this way is hard to build using subrtactions methodes , plus this shape has alot of hard angles that only 3D printer can do if within 45 degree without support, and with the sutable speed to make the print stable.

    Prusa Slicer

    we are suing Prusa slicer , check is't main tools in this image:

    on the left side, we have the tools that can controll the locatin, scale, rotasion, facing the object to the printing surface and cut the shape

    down to the lft we can choose if we want to see the shape in Layers or as 3d shape

    to the right we can see the basics tools for the print...

    you can see the sittings that I am using in the following

    Time and matirals for the print:

    abetter imange for the sitting :

    printing settings : can provide the main info about the outcomes of the print ; 0.2mm is the thikness of each Layers , the smaller the laier, the better the quality... for my< I usually use 0.15 to 0.2 for good quaily and fast print

    filament; with this, you can choose the materials for printing, we care suing colorfabb in our printer

    and ofcours, prusa has many models, we are using MK3s

    supprot is not needed for this design, becouse the angel is within the rage of 45 degree

    and this shape will not be used to drill the walls...............so 15 infill is more than what it realy needs; the more the infill, the harder the shape

    You can find the final design at STEP form in this link: unreal.step

    now lets print the desing:

    here is the object after printing, from diferent angles:

Some Problems WE faced

  • missing 3D scanner power supply, silly us!!
  • facing problems with lighting conditions for 3D scanning
  • we cahnged the location of the 3D scanner, to have a better lighting conditions, then staerted scanning:

    some scanning angle did not work with the shape, you can check the empty space in the top part of the shape:

    lets convert it from only faces to 3D mesh by going to mesh option and choise the level of texture needed, then wiat until it finish:

    and there you have it..... the final boss of the game!!! this looks Miserable!!!!hhh: