Merge command not working with this edge not working with this edge, join work but it make new edge and i need to Merge on the geo. any help really appreciated it

Without file 3dm that is maybe some hard to help! :)

Hi albehany

Could you post your 3dm file.
It's easier to find the problem and help you

Regards

Hi albehany, Merge can only merge edges that are tangent to each other. Those edges probably are not quite smooth and so can't be merged. If you could post the file I could check if that is why.

I'd probably try doing an "untrim" on that surface. To do that use Edit > Separate to break it into an individual surface not joined to anything else then select all edges and use Delete. That will remove the current trim boundaries and recover the underlying surface with its natural boundary edges.

- Michael

Hi guys, thank you for the help, this is small part from the file it's file .STEP format and i need to fix the hole to remodel the missing part and if there is away to bevel the edge in the blue color in the image
i know the file is miss so i wander what the best way to fix it because what i did i spent around 9 hrs to fill and remodel this small holes anyway i am sorry for not share the full file because i am under NDA Agreement. Thank you one more time.

HI,

I modified two holes.
Is it the way you want to do ?

I am interested by the method who re merge the top edges... :)
The Michael method above don't work for me :(

Of course redraw the surface by Sweep the good bottom curve by the 2 lateral rails works but...

Fact to be in mm can play on the "RemoveDuplicates" tolerance ?

My idea is to erase the hole and redo them with a merge of the hole.

- separate the surface to have simple surfaces
- erase the edges of the hole to erase the hole on main surface.
- redo a closed curve with the rest of the hole under surface with small parts of edges.
- copy/paste this curve to have a closed curve extracted.
- Next reconstruct or rebuid curve to have a clean curve.
- extrude both side
- merge the extrude and main surface before cleaning and make a filet.

The result is pretty clean.

Next redo N-times or make a array of holes on a curve

right idea or wrong one ?

It depends on the final result needed. Extrem precision of the source for product ? Or a very near copy ?

Hi albehany, so yes some of those edges have end tangents that are up to 3.5 degrees different from each other. That is enough to prevent the edges from being mergable, only edges that touch smoothly with a tighter tolerance can be merged.

To get one long single edge there you would need to have the edges reconstructed by doing an untrim.

To do that, select the 2 faces on either side of those fragmented edges and use Edit > Separate twice. The first use will break the 2 faces off from the main object but they are still joined together. The second use breaks them out to individual surfaces.

Select one edge of each surface and then use Ctrl+A to select all edges. Then use Delete to remove the current fragmented trim boundaries and restore the fully underlying surface with it's natural surface edge trim boundaries. Then the vertical piece needs to be retrimmed.

> if there is away to bevel the edge in the blue color in the image

What radius of a fillet are you wanting to put in there?

There is a very small sized "shelf" in that blue color area:


That small shelf will limit edge based filleting to a very small value.

If you want to put in a larger radius fillet you could use surface/surface filleting instead. To do that separate out these 2 surfaces so they are individual objects not joined to anything else:



Select those 2 surfaces and then when you do a fillet it will do a surface/surface fillet operation instead of an edge topology based one. You'll need a radius of at least 2 in this case:


- Michael

How select 2 surfaces in this case ?

There is only one surface! The twice "Separate" Delete don't work...I must miss something! :)

Hi Pilou, sorry I was working on this spot here where there are 2 surfaces:


For the area you are working on with just one surface along those edges, select that one surface and use Edit > Separate so it is not joined to the main piece anymore, then select all edges and use Delete. The easiest way to select all edges is to select one edge and then do Ctrl+A.

After the untrim when you then go to select edges you should see there is just one long edge there now.

- Michael

OK i have find that I miss! :)
It was "select all edges"!
For me i have understood "all edges" who are "all edges" not merged on my "bottom" face! (so "one edge" of the surface)
:)

Now with selecting all "4 edges" of the surface all works fine! :)

...but maybe my method by kill the surface and redraw by a Sweep with the "3 good edges neighbour" is more speedy...

WOW!! thank you so much guys for all the help and sorry for late replay. i will try everything you did here. really interesting thank you one more time.

快捷键代码：script: /* Select edges v1.4 */ var gd=moi.geometryDatabase, so=gd.getSelectedObjects(); function ss(o,v){o.setProperty("selected",v)} function sl(o){ for ( var i=0; i<o.length; ++i ) o.item(i).getEdges().invertProperty("selected");} gd.selectLoop(); sl(so.getFaces()); sl(so.getSolids()); sl(so.getOpenBReps()); sl(so.getSingleFaceBReps()); ss(so.getBReps(),0); ss(so.getFaces(),0);

环选边，如图1-2和3-4两种选择模式，选择完成后可以合并（JOIN）成曲线，重新构面，就没有破碎的边缘了。

15分钟的事情，构造思路的问题。





仅选中这些面，反选（invert）隐藏（hide）掉其他的一切，并将这些面涂上其他颜色，方便一起选择。

单独加厚（shell）一个面并倒角。




删除背后以及侧面的面，完成。

Hi Suiyan,

Merge and Join are two different things. It sounds like maybe you want Merge rather than Join. There is not a button for Merge. Hit Tab and then type Merge to merge curves.

But, it is usually a bad idea to merge edges of a cube. If you do not like seeing the edges a better way is to hide them by clicking the eye icon like this:



- Peer

谢谢，我知道该怎么做。我的图片所演示的是循环边快捷键的效果（中国的使用者都这么称呼这个命令，意思如图片所演示的，快速选择面的轮廓的所有边缘或一段相连接的所有边缘）。我并不是分不清合并（merge）和连接（join）的区别，而是对于更多段更小的边merge命令的效果并不理想，并不能完全合并成一条边。

我的图片演示是对albehany的情况，将所有细小的边缘连接（join），成为一条曲线，再用网格曲面（network）进行修补会非常顺利。