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Weird bump when using loft for airframe
mikel_morales
Member Posts: 6 ✭
Hey there, so I've been running crazy with this problem; I've tried several things without success. So when using the loft feature on this design, first I cannot do it all with just one loft, had to divide it into 2. Also, I end up with a weird bump that I don't know where it comes from on the bottom. Please help me
link: https://cad.onshape.com/documents/d2fa29abe811b0f88b20b1db/w/3a4e91c619c66535e7eba06a/e/ae9da9de42946138083e051f?renderMode=1&uiState=693b4b301d503516d3a52e5f
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Answers
This is the bump i talk about. Forgot to upload the photo from the begining
Your sections have a lot of different numbers of segments which aren't tangent. I'm not exactly sure what you want the result of the loft to be if the cross sections have bumps in them.
Simon Gatrall | Product Development Specialist | Open For Work
Rule of thumb for fuselages: Only build one half of them. Mirror later. Reduces the amount of reference geometry required by 50% and minimizes the likelihood of error dramatically. Build the outer shape only, create the inner shape by means of a thin or shell feature, unless you have good reasons. Don't rely on the cross sections somehow making a good shape on their own: They won't, unless you need a potato. Use guide curves.
https://cad.onshape.com/documents/e287107f927fb105f512901c/w/5654b700258108dd97bc2886/e/c8a29b86c0791f3f4c40f9a1?renderMode=0&tangentEdgeStyle=1&uiState=693bf068c8cd6198768b28f4
This is a quick and dirty sample with not even all sketches fully constrained, though tangency is taken care of. See how much more control there is? See how it results in one single loft? See how the sides are tangent in the center plane and absolutely symmetrical?
https://learn.onshape.com/?hostDomain=cad