Here will be a quick but complex 3D mechanical modeling project you can use to practice your skill in 3D using any software you find handy. Although this would have been a nice practice exercise for AutoCAD users, We will be using in this sessions, may be we will come back to this same design later using AutoCAD. Mechanical part in 123D Design Here is what the finished design looks like in 3D And below you will find all dimensions you need to know to replicate the design with accuracy. Without further due, let get into it Step 1 As usual we will start with the 3D sketch we judge the most convenient to help propagate sketches into 3D. It depends on how you look at it. I will start with the sketch of the second image. I first need to get this sketched Step2 Use the offset command to create other shapes. Step 3 Here is what you should be left with after the previous stage Step 4 Extrude both shapes in opposite directions, the biggest one by 8 and the smallest one by 24. ( You might need few steps before 123D Design allows you to extrude both independently. You may just decide to copy and paste, tweak it a little bit before joining both object again) Step 5 MERGE Both, and FILLET the upper edge by 20 and flat edge by 2. Step 6 Turn the object on his belly, use the previously created sketch and the FILLET command to create the following shape. Step 7 Here is what you need to have Step 8 Extrude the shape created in the previous step by 24 inwards. Step 9 Delete the 2D sketches and FILLET the inside edge by 12 Step 10 Create a cylinder and place in on the top of the whole. ![]() Autodesk 123D apps Autodesk is no longer offering 123D Over the past few years, millions of people have unlocked their creativity with the Autodesk 123D apps and community. Autodesk 123D Design is a powerful, but easy to use software application that enables people to create detailed 2D and 3D models. One of the biggest differences between most 3D modelling software. Step 11 Move the cylinder downward by 16, and merge the whole. Step 12 Place a cylinder of Radius 15 and height 5 on top of the previous cylinder And create a cylinder of radius 4, longer enough to help create the circular hole in the middle of the previously created cylinders Step 13 Merge the whole except the last created cylinder, and subtract the latter from the whole. Step 14 Do the same to create the other part of the design Step 15 FILLET necessary parts of the object to complete the project. How to freeze rows in Excel. Freezing rows in Excel is a few clicks thing. You just click View tab > Freeze Panes and choose one of the following options, depending on how many rows you wish to lock: Freeze Top Row - to lock the first row. Freeze Panes - to lock several rows. The detailed guidelines follow below. How to freeze top row in Excel. To keep an area of an Excel worksheet visible while you scroll to another area of the worksheet, you can either freeze specific rows or columns in one area to lock them in place or create multiple worksheet areas that can scroll separately from each other by splitting rows and columns. How to Freeze Rows and Columns in Excel 2016. Excel's freeze panes feature solves this problem by letting you lock specific rows so they're always visible when you scroll. Freeze top row. Open the sheet where in you want to freeze the multiple rows and columns, keep the first row on top and first column to the left then click next to the cell of the last column and row till where you want to freeze, as an example we would like to freeze from Row 1 to 13 and Column A to E, so we will click on Cell F14. Freeze top rows in excel. Although being able to freeze the first row (or first several rows) is quite handy. It is important to realize that you can only freeze rows from the top down. You cannot freeze rows from the bottom up or freeze a row independently in the middle of the worksheet. Learning how to freeze a row in Excel develops a useful skill to have.
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