How do I fix this loft?

john_eisenlohr500

I've been cutting and pasting sketches to a make a new different sketch. I have a really hard time getting the new sketch on the origin that I want it to be on to make it define. 
Once I have got them on the origin and defined I loft them.  The loft is all screwed up. Here is the loft - https://cad.onshape.com/documents/e93710dd859cb057dc18c83e/w/64b35c5fd4c72c5aaeb58826/e/ea5eeed84411ec5c878ad2b0

S1mon

You can use the transform tool to move a sketch after you paste it. 

Alternatively, if you have defined your original sketch relative to a point on the origin, you can just align that point to the origin and it will move - assuming that everything else is fully defined relative to itself. 

dirk_van_der_vaart

There is no need to copy the sketch to the second plane.
In the second sketch and plane just select the lines and curves of the first sketch and hit the Use command
And for the loft use some guide lines, 3D fit Spline
Here is the help file
https://cad.onshape.com/help/Content/sketch-tools-use.htm?Highlight=Use
https://cad.onshape.com/help/Content/3d_fit_spline.htm?Highlight=3D Fit spline

eric_pesty

You need to split the trailing edge on sketch2 to match the number of lines between the two profiles. Then you can use "match connections" (if needed) to get the loft correct.




https://cad.onshape.com/documents/c2170e583cf45c92748c5cef/w/ee23f97a5b42d826fc9c0244/e/ab17437d8f864880d4ec507c

S1mon

You can use the transform tool to move a sketch after you paste it. 

Alternatively, if you have defined your original sketch relative to a point on the origin, you can just align that point to the origin and it will move - assuming that everything else is fully defined relative to itself. 

dirk_van_der_vaart

There is no need to copy the sketch to the second plane.
In the second sketch and plane just select the lines and curves of the first sketch and hit the Use command
And for the loft use some guide lines, 3D fit Spline
Here is the help file
https://cad.onshape.com/help/Content/sketch-tools-use.htm?Highlight=Use
https://cad.onshape.com/help/Content/3d_fit_spline.htm?Highlight=3D Fit spline

eric_pesty

You need to split the trailing edge on sketch2 to match the number of lines between the two profiles. Then you can use "match connections" (if needed) to get the loft correct.




https://cad.onshape.com/documents/c2170e583cf45c92748c5cef/w/ee23f97a5b42d826fc9c0244/e/ab17437d8f864880d4ec507c

john_eisenlohr500

Thanks guys! Every week I learn a little bit more on how to use this program. 

john_eisenlohr500

I've been designing , building and sailing solid wings on land and ice for the last 30 years. I always lofted the wings full scale on my work bench. I  wanted to learn a better way to draw the parts. Now I can cut out the ribs using a cnc router because of Onshape. One of my old wing boats - https://youtu.be/_4ds-poJ4PQ