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engineering drawing - Coggle Diagram

- - - - OFFSET FROM AN EXISTINMG PLANE
      - DRAW THE 2D SKETCH
        
        JUST DRAW WITH RESPECT TO THE ORIGIN OR RANDONLY ANYWHERE THEN APPLY CONSTARINTS RATHER THAN FIGURING OUT THE EXACT COORDINATES
        
        Also note that on the same 2d skecth you can make all the feature and then do multiple extrusions
        
        dont forget to make the yellow lines construction lines
        
        no need to be symmetrical go with x axis
      - use AUTO RESIZE IF INCREASE SIZE
  - - - Exapmle if you have to create many joint lines make sure to make them in one single go and then apply the constraint
      - Always first create rough features then apply the constraints
        
        Or give the right positioning
    - - Use plus command
    - - make a sketch visible
        
        very useful if multiple extrusions or want to use the same sketch multiple times
      - in the sweep
        
        if you hover cursor on the curve or edge and wait then you can change from curve to an edge
        
        note that while creating the sketch make sure you make different edges with different line command
      - assembly
        
        constraints
        
        insert
        
        lock the rotation around the axis if not needed
        
        offset be careful
        
        instaed of this you may first mate then insert
        
        the first selection if offset from the second
      - just hover your mouse over a part to choose different possible edges , axis , normals
      - WHEN DOING A PATTERN YOU CAN SELECT FEATURES FROM THE MODEL TREE
      - WHEN INSERTING BE CAREFUL OF THE STARTING SURFACES OF THE TWO CYLINDERS AND LOCK ROTATION
      - HORIZONTAL VERTICAL CONSTRAINT ALWAYS CHECK DONT ASSUME THAT YOUR ORIENTATION HORIZONTAL IS THE SAME AS IN THE CONSTRAINT
      - BE VERY CAREFUL WHILE APPLYING CONSTRAINTS SOMETIMES WHEN YOU APPLY ONE CONSTRAINT IT CHANGES SOME OTHER THINGS
        
        ALWAYS TRY TO KEEP THE SKETCH FULLY CONTSRAINT BEFORE ADDING NEW THINGS TO IT
        
        KEEP IN MIND THE ORDER OF THE CONSTRAINTS AND BE EXPLICIT
      - SOMETIMES YOU HAVE TO MIRROE FEATURE BY FEATURE AND MAY NOT BE ABLE TO MIRROR MANY FEATURES SIMULTANOUESLY
      - ASSEMBLY
        
        sometimes the rotation lock can backfire so you may have to remove it
        
        if you are inserting two cylinders on one cylinder then sometimes changing the order in which you insert can be usefull
        
        always when you want to apply any constraint first you select the constraint then select the parts required
        
        USE SECTION VEIEWS AND RETURN BACK USING END SECTION VIEW
        
        THIS ALSO APPLIES TO PART MODELLING
        
        use tanget constraint
        
        understand why two inserts didnt work
        
        but one insert and one axis mate worked
        
        understand and plan
        
        which constraints between which parts you should add first
        
        why sometimes constraints order matter
        
        learn more about each constraint
        
        what it does
        
        make a list or summary of when to use it how to use it
        
        this you can also do for the other commands
        
        this
      - 2D sketch
        
        make sure that you ground and lock the things if they are not fully constraimt or you will be apply more constraint but you want those things to remain fixed
        
        PROJECT CUT EDGES
        
        ORDER OF SYMMETRIC VS VEETICAL CONSTARINT
        
        ZOOM IN TO SELECT THE POINTS
      - NOTE SOMETIMES IF SOME DIMENSIONS ARE NOT GIVEN THEN DONT ASSUME AND MAKE THEM
        
        RATHER USE CONSTRUCTION LINES FIRST AND TRY TO MAKE THE SKETCH USING ONLY THINGS YOU KNOW SUCH THAT WHAT IS NOT GIVEN IS AUTOMATICALLY DECIDED BY THE REST
      - DONT GET STUK ON ONE FEATURE OF A PART WHICH YOU ARE NOT ABLE TO IMAGINE OR
        
        SOMETIMES WE THINK OR IMAGINE A PART T IN A CERTAIN WAY AND THEN WE GET STUCK OR FRUSTATED BECAUSE IT DOESNT MATCH SOMEVIEW
        
        BEST THING IS NOT TO ASSUME AND NOT TO WAIT TILL YOU GET IT ALL
        
        MAKE SURE THAT YOU APPLY THE BASIC TECHNIQUES AND ALWAYS KEEP IN MIND THE POSSIBILITIE
        
        IF NOT SURE MAKE SOME FEATURES
        
        LIKE IT COULD BE CURVED , INCLINED OR OBLIQUE OR A NORMAL AND BE OBSERVANT OF WHAT IT IS NOT WHAT YOU WANT DONT GET UPSET IF WHAT YOU THOUGHT ISNT MATCHING LEAVE IT TRY SOMETING ELSE DONT GET STUCK
      - error design view locked cannot save
      - sometimes dimensions are not given expilictly so you have to understand and find them
  - - - everything you have made till now will be made hollow so plan before hand when shelll use
    - - TO NEXT FEATURE
- - - - FRONT VIEW DOUBT
- - - - THAT PLANE MAY TOUCH THE DIRECTLY SOME PARTS OF THE SOLID
        
        THOSE PARTS ARE INDICATED BY THE SECTION LINES (TILTED LINES)
    - - 45 DEGREE LINES IS IT ALWAYS DOUBT
      - SPACING IS UNIFORM ABOUT 2MM
    - - CUT THE MAXIMUM NUMBER IF FEATURES OF THE SOLID
    - - DOUBT ABOUT HOW WE GET A PLKANE
  - - - THE DIRECTION FROM THE TAIL TO THE HEAD INDICATES THE DIRECTION
      - the plane is indicated by the center lines 6:1
        
        light lines for that
        
        arrows have to be darker
- - - - WHILE DOING THAT YOU CAN TAKE THE HELP O F COMPASS TO MAKE THAT VIEW
- - - - FV , TV , LSV , RSV
        
        all with respect to us not the object
    - - rotate the object in such a way that some edges of tthe object make a specific angle with the refernece line
      - EYE IS VERY FAR
      - THREE FACES AT THE SAME TIME
      - THREE AXES TO SHOW THE THREE DIMENSIONS L B H
      - DISTANCES PARALLEL TO THE AXES WILL BE SAME IN THE DRAWING
      - REFLECTIONS
        
        GUIDING PRINCIPLE
        
        THE DISTANCES OF THE POINT S FROM TH PLANE MIRROR REMIANS THE SAM E
        
        FIRST IDENTIFY THE POINTS
        
        DRAW THEIR PROJECTIONS
        
        AND ASSUME A HYPOTHETICAL PLANE AT SOME DISTANCE FROM THE OBJECT AND ACCORDING TO THE DIATNCES OF THE POINTS FROM THE PLANE DRAW THE PROJECTED POINTS
        
        JOIN THE POINTS TO GET THE CORRESPONDING EDGES
        
        1 more item...
        
        BREAK THE OBJECT INTO POINT AND EDGES AND SEE THE MIRROR IMAGEOF THE POINTS AND EDGES ONE BY ONE
- - - - repeat the above for all the parts one by one