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Drawing the profile Start with the x-z plane and sketch a line. | ![t0301 t0301](http://lh4.ggpht.com/-BKUyUFvkcxw/UqYZqLMxNnI/AAAAAAAABSc/CNwh_hkpvko/t0301_thumb.gif?imgmax=800) |
Extruded Surface Select the Extruded Surface tool from the Surfacing toolbar. Click Select from Sketch from the ribbon bar. Pick the line and Click accept ![accept accept](http://lh5.ggpht.com/-Ziygi7GkDTI/UqYZt6ArH8I/AAAAAAAABTM/aFP3z2ZBTxM/accept_thumb.gif?imgmax=800) Click Symmetric Extent and type 100 for the extrusion length. Click Finish on the ribbon bar. An extruded surface is created (see fig on right)
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![t0302 t0302](http://lh4.ggpht.com/-LmZGtcCBKUs/UqYZw1jGSvI/AAAAAAAABTs/Qe0VC5I33TE/t0302_thumb.gif?imgmax=800) |
Prepare to Trim Sketch a circle on the extruded surface as shown. | ![t0303 t0303](http://lh3.ggpht.com/-7ir8oMMPU4c/UqYZyHfQC7I/AAAAAAAABT8/8cO5I5xbGvc/t0303_thumb.gif?imgmax=800) |
The Surface Select the Trim Surface tool from the Surfacing toolbar. Pick the Extruded Surface as the surface to trim. | ![t0304 t0304](http://lh6.ggpht.com/-cBYP02TReUI/UqYZ0wssXRI/AAAAAAAABUc/g5hWQLvkPjA/t0304_thumb.gif?imgmax=800) |
Trimming Curve Select the circle as the trimming curve. Click accept on the ribbon bar. | ![t0305 t0305](http://lh3.ggpht.com/-Kyt5V6pi_tY/UqYZ3eMDLoI/AAAAAAAABU8/RvUw0p7v9_k/t0305_thumb.gif?imgmax=800) |
Which part to Remove Click to indicate which part of the surface to trim. See figure. | ![t0306 t0306](http://lh5.ggpht.com/-Mhd1MfEFxoI/UqYZ44EHqAI/AAAAAAAABVM/WM2mzF4VQ20/t0306_thumb.gif?imgmax=800) |
Surface is Trimmed Click Finish on the ribbon bar. The surface is trimmed as shown. | ![t0307 t0307](http://lh5.ggpht.com/-6_EOjnzte-w/UqYZ6Oq6BWI/AAAAAAAABVc/BlriVEpArHE/t0307_thumb.gif?imgmax=800) |
Extrude Again Select the Extruded Surface tool from the Surfacing toolbar. Click Select from Sketch from the ribbon bar. Pick the circle and click Accept ![accept[6] accept[6]](http://lh3.ggpht.com/-baJRHBy_ai4/UqYZ-YI726I/AAAAAAAABWM/ydaZz8vkQck/accept%25255B6%25255D_thumb.gif?imgmax=800) | ![t0308 t0308](http://lh6.ggpht.com/-Zh1q-WztD1c/UqYZ_z_MY9I/AAAAAAAABWc/fpVz0dCOdos/t0308_thumb.gif?imgmax=800) |
Height Type 100 as height of extrusion and click above the plane. | ![t0309 t0309](http://lh4.ggpht.com/-n9fvqmcvDmk/UqYaBLo9lzI/AAAAAAAABWs/g-jTYithPIM/t0309_thumb.gif?imgmax=800) |
Offset Surface Select the Offset Surface tool from the Surfacing toolbar. Pick the bottom Surface. | ![t0310 t0310](http://lh4.ggpht.com/-Y9dKWEQspic/UqYaDofvqbI/AAAAAAAABXM/RU0MWlQyFFA/t0310_thumb.gif?imgmax=800) |
Distance Type 100 as the distance to offset. Indicate the side to offset as shown in figure. | ![t0311 t0311](http://lh5.ggpht.com/-mY1GZI3-rKU/UqYaFErWJ5I/AAAAAAAABXY/ixA_rOmfE6s/t0311_thumb.gif?imgmax=800) |
Surface is Offsetted An offset surface is created. Click Finish on the ribbon bar. | ![t0312 t0312](http://lh6.ggpht.com/-ZxwOHh2bN1A/UqYaGdTerMI/AAAAAAAABXs/B4wMLXW1ACs/t0312_thumb.gif?imgmax=800) |
Trim Again Trim the offsetted surface using a circle. See figure. | ![t0313 t0313](http://lh4.ggpht.com/-UlJMCTOhUjE/UqYaHx7G4bI/AAAAAAAABX8/37l2fsPA9Yk/t0313_thumb.gif?imgmax=800) |
Extrude Again Create another extruded surface as shown. See figure. | ![t0314 t0314](http://lh3.ggpht.com/-RrVXhBlRrck/UqYaJCzc08I/AAAAAAAABYM/dlz4xZQtTs8/t0314_thumb.gif?imgmax=800) |
Stitch the Surfaces Select the Stitch Surface tool from the Surfacing toolbar. Pick all four surfaces - 2 cylindrical and 2 flat circular. Click accept . |
![t0315 t0315](http://lh5.ggpht.com/-3tP3e_PS0vc/UqYaM4p7b-I/AAAAAAAABY8/NDVoZSVupnk/t0315_thumb.gif?imgmax=800) |
Do not Heal In the Stitched Surface Options dialog that appears, make sure that the Heal stitched surfaces is unchecked. Click Finish on the ribbon bar. |
![t0316 t0316](http://lh5.ggpht.com/-2wNlaroZd8M/UqYaORnBIZI/AAAAAAAABZM/-7ztehTPEa4/t0316_thumb.gif?imgmax=800)
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Solid Body Stitching the four surfaces converts them into a solid body of zero thickness. |
![t0317 t0317](http://lh3.ggpht.com/-ILgac4tgebQ/UqYaPrbC9VI/AAAAAAAABZc/L71unW4YAds/t0317_thumb.gif?imgmax=800) |
Thicken the Solid Body Select the Thicken tool from the Features toolbar. Pick the solid body. Indicate the direction to thicken as shown in figure. Click accept ![accept[10] accept[10]](http://lh6.ggpht.com/-8BRS5X5uOng/UqYaSCPDWhI/AAAAAAAABZ8/jGQmRW0dQEg/accept%25255B10%25255D_thumb.gif?imgmax=800) |
![t0318 t0318](http://lh5.ggpht.com/-0imBK41PiaI/UqYaTiT8YpI/AAAAAAAABaM/RBryTMCFHBg/t0318_thumb.gif?imgmax=800) |
Thickened Solid Body The solid body is thickened. See Figure. | ![t0319 t0319](http://lh6.ggpht.com/-GJXQR1GncOM/UqYaVJZT50I/AAAAAAAABac/l4tITsnr3GU/t0319_thumb.gif?imgmax=800) |
Round the Sharp edges Optionally, round the sharp edges. See figure. | ![t0320 t0320](http://lh4.ggpht.com/-mUEc0S3dbis/UqYaWORptWI/AAAAAAAABas/fvQM8aQXMLA/t0320_thumb.gif?imgmax=800) |
Summary The summary of all the above steps is as shown on the right. cMayoCAD is a first of its kind training program where you learn to build your own, brand new, fully functional CAD system using a geometric modeling kernel. Latest offerings from www.CADVertex.com
| ![t0321 t0321](http://lh6.ggpht.com/-CMEZMx9ovxo/UqYaYLCz8PI/AAAAAAAABbE/qiMWyOG63Lk/t0321_thumb.gif?imgmax=800) |
![II_R1C13 II_R1C13](http://lh6.ggpht.com/-uzLyv0z_b6I/U66dtPkvngI/AAAAAAAAJUE/QyiPX3PlBjE/II_R1C13%25255B4%25255D.png?imgmax=800) ![II_R2C14 II_R2C14](http://lh3.ggpht.com/-DJ7wK1q6TC4/U66duHGoTTI/AAAAAAAAJUM/SJsJ1oq9DuM/II_R2C14%25255B4%25255D.png?imgmax=800) | ![II_R1C21 II_R1C21](http://lh6.ggpht.com/-wlFxLG1Khls/U66dumcReOI/AAAAAAAAJUU/BMb7Xg2L9cA/II_R1C21%25255B4%25255D.png?imgmax=800) |
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