3D modelling help - Subdivision modelling and smoothing artefacts!

Zoddo

I am modelling a firearm and practicing my modelling skills when it comes to subdivision modelling and chamfering in 3ds max.

So far I am doing a decent job at it, however I am now stuck at the supressor. As I can't seem to add in the details for the highpoly mesh, because everytime I extrude inwards and subdivide through Turbosmooth or Opensubdiv. It creates a bulge which looks really off on a hardsurface model.

Can anyone help me fix this up, because I have no idea how to fix my meshflow in order to make it not bulge!

Here are some pictures of my issue:

Highpoly - obvious smoothing problems.

When taking a closer look you can see that it bulges outwards.

The lowpoly is superflat.

I thought it would be my engons so I tried to fix that, but the problem persisted. Here I tried some methods cleaning it up.

Here is the meshflow of the highpoly of how it looks now.

I am roughly 75% through with modelling this firearm, and this is now the only issue that's causing me headaches....

Does anyone know how to fix this, or atleast point me in the right direction, THANK YOU!

Soviet

Cylinders! Try this (https://polycount.com/discussion/comment/2679537/#Comment_2679537).

Zoddo

Soviet said:

Cylinders! Try this (https://polycount.com/discussion/comment/2679537/#Comment_2679537).

Thank you I will try this as soon as I get home, it does look like something that will fix my issue as i'm extruding without supports.

wirrexx

Soviet said:

Cylinders! Try this (https://polycount.com/discussion/comment/2679537/#Comment_2679537).

Yes try that, One wise @perna once said "dude use the meshes natural edges as support". What he meant was, make sure to create a cylinder that when you cut into it, it's original segments can act as supporting edges. So no need to add one or two edges that deform the curve. i hope you know what i mean. If not, look at what @Soviet just linked you and go for it. 
 

Zoddo

wirrexx said:

Soviet said:

Cylinders! Try this (https://polycount.com/discussion/comment/2679537/#Comment_2679537).

Yes try that, One wise @perna once said "dude use the meshes natural edges as support". What he meant was, make sure to create a cylinder that when you cut into it, it's original segments can act as supporting edges. So no need to add one or two edges that deform the curve. i hope you know what i mean. If not, look at what @Soviet just linked you and go for it. 
 

Yeah i tried it and it did not work, the mesh got better but the problem was still there. I think i'll post something in the thread he linked.

EDIT:

Holyshit NVM!

I fixxed it by increasing the sides and the segments!