Thank you. That makes sense :)

That's great to hear and thanks for leaving the feedback. Appreciate it.

I am glad this has helped and I do know the problem you have! If I use a generated model from makehuman, charmorph or mb-lab I usually remove the teeth and tongue at least if the mouth is closed and it isn't always easy. I haven't found eye cavities an issue though. I think makehuman had an option to not include the mouth parts though I might have just mis-remembered that.

@@notverygoodguy so unfortunately, your solution didn't work because the cavities are not enclosed cavities at all - they are just caves so to speak from the front of the model, even with a closed mouth, there is a minuscule gap and the eyeballs don't seal off the eye sockets. Back to trying how to add a solid shape into the holes :-( But I still think I need to bookmark this video for future uses.)

@@OzTwinmum You might try just going mesh->cleanup->fill holes. This often works for me when there is an open mouth. Alternatively, select faces on the back of the head and hide them with "h". You can then just remove the mouth cavity fairly easily. At this point you either join the top and bottom lip or boolean a ball or somthing in there. Of course you need to unhide the faces you hid with ALT H afterwards. I would say that you can also drill resin draining holes through the entire head and then gluing the hair on top after wards :) With all that said, if you generate your character with charmorph, the mouth will print fine and the resin will drain out if you do nothing at all.

@@notverygoodguy Again thank you.. I will give these methods a try. Added bonus is I'm learning more and more of Blender

@@notverygoodguy yay, I have a printable file with no internal cavities. I took your advice and went in from the back of the head and remove the cavities and sealed up the open areas. Exported to my slicer and all solid. Wish I had found your videao sooner lol

I am very glad this was useful for you. Feel free to let me know if you have any issues when trying this technique.

Hope it will be helpful

Thanks for this. It is something I hadn't considered. Do you think that the solid version might have some suction issues on the FEP though?

@@notverygoodguy So long as you support it with a raft, that shouldn't happen. Or at least it hasn't for me, yet lol

@@ParryHisParry Then I wish you luck :)

Thanks so much for the feedback!

I understand your pain here. It must be quite frustrating. The difficulty here would be that in many cases I don't know what the actual function is and I guess many people are the same. H is easy enough I guess as it hides the selection but I don't know what that is actually called in the key map. Even worse for things like p. Internally I associate that with seParate but I am pretty sure that isn't the correct name. I like your idea but am not sure how I would achieve it.

Thanks for this. I hadn't thought of that one!

L will select everything that is connected to the vertex under the mouse pointer. H will hide everything selected. I would guess that your inside wall is connected to the outside walls somewhere so when you press L, it is also selecting those inside the model. If this is the case, you could try manually selecting all the outside vertices by using the circle select tool by pressing c and then adjusting the size of the tool with your mouse wheel. Then brush all over the outside of the model. Be careful as it is easy to miss some. Then when you have selected everything you can see, you can press H. If you are having problem, post a link to your blend file and I'll have a quick look.

Great that this helped! Thanks.

This can be a little more difficult but you might be able to do it this way. Making sure X-Ray mode is off you can select everything you can see by using the circle select option, press c and then use the mouse wheel to increase the size of the selection circle and then go round your model selecting everything you can see. Because you don't have X-Ray mode on it shouldn't select any inside vertices. Then invert the selection ( turn on X-ray to check it has now selected the insides) and just delete the selected vertices. I'd be interested to know if this actually works for you.

​@@notverygoodguy thank you for the suggestion, but unfortunately it doesn't work because the parts the surface is not smooth, lots of faces are hidden from view so even going around and around selecting, it isn't able to select everything.

@@notverygoodguy let me rephrase it: it works, but it is too much of a high poly textured sculpt model, that it takes forever to try to select everything. And I'm not that skilled in blender. So I'm trying to find an easier way.

@@julianopolito You are skilled enough that you diagnosed correctly why the method in this video wasn't working for you. Seems to me your only option is to select as much as you can with the circle select tool as described and then hide what you have selected by pressing h. This will then make it possible to see and select the more difficult to get at vertices. Keep selecting outside vertices and hiding them until you are left with just the inside of your model. Then turn x-ray mode on and select everything remaining which should be the inside of the model until you have selected everything. Delete the vertices and then do alt-h to unhide all the outside vertices you selected earlier. You'll need to be careful and have a copy of your model first and you might need to fill up some small holes afterwards (use Mesh->Clean up->fill holes) but this will work in principle even if it does take a bit of time. Also make sure you have face orientation on as described in the video so you can see a little easier which vertices to select.

Assuming you are not select everything with "a" instead of using "l" you could be very unlucky. If you have a model where the inside touches the outside somewhere this method wont work. What you could try although it would be a bit more annoying is to select all of the vertices manually using the circle select tool or the other selection tools. Then when you are sure you have them all selected, duplicate them with SHIFT D, press the left mouse button and then go p->by selection. This will give you a second but solid version of your model. If your models it complex it could be tough to be sure you have all the outside vertices selected though. Please let em know if you continue to have problems with this.

Inside does invert to outside at some points. This is my problem. Thank you for your response.

@@archonoch Thanks for letting me know!

I presume you did it just on the blue colour? If not are you sure you have any inside faces. To check just create a cube and use ALT B to make a cross section. Then ALT B again when finished.

This will happen if the parts that don't get selected are not actually attached to the bits that are selected. You might want to try merging by distance on everything before you start. Select everything in edit mode and then go Mesh->Cleanup->Merge by distance.

I am very glad to hear this was useful for you! Thank you for letting me know.

Good to hear it was helpful and thanks for the feedback.

Excellent! Thanks for letting me know.

L selects connected vertices. Is it possible that you have portions of your model that are not connected. You could try doing a merge by distance to see if that helps.

@@notverygoodguy i ended up merging the model in the basic windows 3D editor and it also filled it in as well.

@@SnekPlskin Good news. WIndows builder is often a pretty good option for fixing things.

Firstly are you sure it's actually hollow? A Blender object by default is solid and so you have to actually make it hollow on purpose. There are several ways in which a model may look hollow in other software e.g. a printer slicer with no infill selected but that doesn't mean it actually is. Are you able to share a link to your blend file or model, maybe using wetransfer.com or google drive or similar? I would be interested to have a look at it.

Glad to hear it :)

The L key selects all the connected vertices under the mouse. If you are getting different results depending on where your mouse is then your model is probably is separate parts that haven't been joined together properly. If you can post a link to your model perhaps I can take a look.

And thank you for the feedback.

I have been trying to find a way to replicate your issue and I can't. Even on a non hollow model it will select everything. Be sure you are pressing "l" and not "L" though. If you still have an issue, let me know.

@@notverygoodguyi have a similar issue the model is a jet ski and the inside is hollow not any part of the object is a solid object so its like different layers of folded paper making a 3d object if that makes sense but now thinking about it this may be an issue that can be solved in fusion?

@@aaron8200 If there is no "inner model" then your model is already solid at least from the perspective of 3d printing. However, if you are able to provide a link to your model I'd be interested to take a look at it.

This could be an issue with your model. Any chance you can provide a link to it so I can have a look?

This video is for when you already have a hollowed out model, likely created by your slicer, that you want to make solid again so is probably not suitable for what you want to do. What might make your job easier if you are just trying to delete some vertices inside your model is to select the outside faces of your model and then hide them with "h". Then you can see what is left inside your model and delete those you don't need. When finished you can get back the faces you hid with ALT-h. I hope this helps but let me know.

@@notverygoodguy i believe this is the best way to describe what im trying to do, delete the inside vertices, when selecting the outside faces it still doesn't leave behind the inside vertices without causing a glitchy mess, any solution to this? i have photos but im sure comment will be auto removed

@@PurrfessorFeline A picture is worth a thousand words but a blend file is even more valuable :) If you can upload it somewhere it would be interesting to see where your issue is.

@@notverygoodguy this is a before and after attempt of deleting vertices from the inside https :// drive. google. com/file/d/1FZejm_wrm1Y_qerWdWbEF1zzf30DC4sq /view?usp=sharing "sorry for spacing i cannot comment links"

@@notverygoodguy This actually helped with my problem. Thank you very much!

If you pressed h and everything disappears (assuming you have pressed l to start with) then your model isn't truly hollow. Are you able to provide a link to your model?

@@notverygoodguy HI! I just saw this message and while I don't have the same model anymore, I still would like to thank you for offering help! I just have new issues now to figure out

Sorry about that. I used to have issues with the audio before I realised I wasn't recording on a mono track but this one seems OK to me. Not sure how to improve it but happy for any suggestions.

The easiest way to do this would be to model a shape of the hole you need and put it in the head where you need it. Then use a boolean difference. If you then turn off the "hole" in the outliner it will leave you with the hole in your model. Hope this helps.

@@notverygoodguy as ive wrote! The boolean tool gives me an error. Cant use it on the eyes. Otherwise it had been finished with that tool. But it dosnt work on that part of the model somehow

@@gaboaaa23 What is the error you are getting? Have you turned face orientation on to check your normals are correct?

Thanks for the vote of confidence :)

To be fair this method only works at taking "hollowness" away from models that were originally solid but have been hollowed out in a slicer or something. It hadn't occurred to me that someone might try to make a "manifold" solid model with it. Your problem is likely to be fixed by the "make manifold" option in the 3dprint plugin that blender comes with or by selecting everything in edit mode an going Mesh->Clean Up->Merge by distance. Hope this works!

@Not Very Good Guy thank you ill get on that tomorrow morning! Thank you so much for your help

I haven't seen anyone else doing it :)

I don't know about that but am very glad the video was useful for you.

Well yes but you can 3d print hollow models too. In fact, I have 3d printed this very model :)

@notverygoodguy right on, I'm just starting out, and I have a printer on the smaller side, so for the size of models I'm going to be making, I'm going to need to fill the interior to key the separate pieces. This is why it's useful for me personally

@@zacharyhall7466 Sounds sensible to me. If you are resin printing then hollow models are essential unless they are small. For FDM printing hollow models are very annoying :)

Thanks for the feedback!

Can you explain which parts you felt were missed? It is always a balancing act getting the amount of detail right. If you go into too much detail you end up saying the same thing in every video and it turns people off. On the other hand of course you want your video to be helpful to as many people as possible.

@@notverygoodguy Dont get me wrong its great video helpful just when you went to click and highlighted at the start would be very helpful if you did that for each menu you click on cause later in the video when switching menus I h lost track of your mouse had no clue what you click on and had to replay video afew times to figure it out. But again thank you for your guides was very helpful

@@bujinmar Thanks for your reply. I'll admit editing videos to highlight all the menu clicks can start to get a bit tiring :) However I'll take what you say on board for the next one. Thanks again.

This case is more difficult as you would need to fill in the holes. One suggestion that comes to mind would be to ensure all the parts are put together in object mode so they make up the completed model. Then join them with CTRL J. Next, in edit mode you need to select all the outside vertices. This might be difficult depending on the model but as a last resort you could select them with the circle select (press c and the use the mouse scroll wheel to adjust the size of the circle) and then just go p->by selected. Then you should have an object of just those selected vertices.

great, that worked. Even easier, when selecting all verticies and then just unselecting the inner surface verticies :) Thank you for the help! @@notverygoodguy

@@bofuhonaw12 Glad to hear you're sorted now. Thanks for getting back and letting me know how it went!

@@bofuhonaw12 Just a thought though, the final model may not be manifold. I would suggest doing a quick merge by distance. In edit mode, select all and then go Mesh->Clean up->Merge by distance.

@@notverygoodguy The cleanup didn't work here, but i managed to fill the holes in the end. Thanks again and have a nice rest Weekend!

I am using the Blender plubin called Screencast keys github.com/nutti/Screencast-Keys. Bear in mind that it does not show a secondary key e.g. "g z" will only show the g and not the z. I still haven't found one which does that.

Latest versions of Screencast-keys does show secondary keys :)

This absolutely does work although would be very annoying with models that actually already have a lot of loose parts. That said, it's an option I hadn't thought of so thanks.

@@notverygoodguy I've had that experience as well, although I've found that at the bottom set of parts the outer shell is either the first or second listing from the bottom. I just turned visibility on and off, and when I located the outside I just shift+clicked the rest of the parts in the list and deleted them wholesale, leaving just the outside. And thank you for this, it let me figure out how to do it that way - I was having a heck of a time trying to get a solid from an STL so I could print it properly.

@@RRSF09 I will play with this idea a bit and see how it stacks up. It makes more sense than just trying to find the insides. Actually, just selecting the outside from the start is probably better than what I have in this video anyway.

I was going to do one but in the end printer slicers are just way better at it than Blender. There are some edge cases where Blender can solve some hollowing problems so I may do one about it soon.

I do now, yes. kzfaq.info/get/bejne/o6d5eKyqmNGwomg.html

Thanks :)

Appreciate the feedback. Thanks.

It is not easy to get this right to be fair though I don't see it too much lower than other videos I watch. I'll put some more effort into the next one though. Thanks for bringing it to my attention.

@@notverygoodguy I am really interested in hearing it. My laptop is usually loud enough in a silent room with nothing else going. Do I detect a British accent? Love the Brits, I've moved here now. Best to you.

@@Mrstrikerace You detected correctly :) I am a Brit though live in Norway these days :) Hope you are enjoying your new home!

"Helpful" is where I aim. Next time I'll see if I can add a car chase or two to fix "boring".