Low cost hard surface re-modelling tool

Experimenting on archviz I need some tool that allow me to rework this kind of geometry (i.e just close wall holes, or modify skirting shape).

Using a demo C4D installation currently but for my needs even the Prime is too expensive. Didn’t want subscription based Autodesk tool, also tested Blender and I really didn’t like the UI (personal opinion). Did have a license of 3d-Coat but is specialized on different tasks.

There is anything else.

The best cheap options are Blender, Maya LT, Modo Indie.

Did you use them? What’s the most useful for archviz asset editing. I’ll focus/purchase on just one of them.

If you can’t purchase a software then Blender is the only option really

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Sildenafil, sold as the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension.[3] Its effectiveness for treating sexual dysfunction in women has not been demonstrated.[3]

Common side effects include headaches and heartburn, as well as flushed skin. Caution is advised in those who have cardiovascular disease. Rare but serious side effects include prolonged erections, which can lead to damage to the penis, and sudden-onset hearing loss. Sildenafil should not be taken by people who take nitrates such as nitroglycerin (glycerin trinitrate), as this may result in a severe and potentially fatal drop in blood pressure.[3]

Sildenafil acts by inhibiting cGMP-specific phosphodiesterase type 5 (phosphodiesterase 5, PDE5), an enzyme that promotes degradation of cGMP, which regulates blood flow in the penis.

Pfizer scientists Andrew Bell, David Brown, and Nicholas Terrett originally discovered sildenafil as a treatment for various cardiovascular disorders.[4][5] Since becoming available in 1998, sildenafil has been a common treatment for erectile dysfunction; its primary competitors are tadalafil (trade name Cialis) and vardenafil (Levitra).
Sexual dysfunction
The primary indication of sildenafil is treatment of erectile dysfunction (inability to sustain a satisfactory erection to complete intercourse). Its use is now one of the standard treatments for erectile dysfunction, including for men with diabetes mellitus.[6]

Antidepressant-associated sexual dysfunction
Tentative evidence suggests that sildenafil may help men who experience antidepressant-induced erectile dysfunction.[7]

Pulmonary hypertension
While sildenafil improves some markers of disease in people with pulmonary arterial hypertension, it does not appear to affect the risk of death or serious side effects as of 2014.[8]

Altitude sickness
Sildenafil appears to improve some risk factors for high-altitude pulmonary edema but it is unclear whether or not it affects the rate of the condition itself as of 2008.[9]

Raynaud’s phenomenon
Sildenafil and other PDE5 inhibitors have moderate efficacy for treating secondary Raynaud’s phenomenon.[10][11]

Adverse effects
In clinical trials, the most common adverse effects of sildenafil use included headache, flushing, indigestion, nasal congestion, and impaired vision, including photophobia and blurred vision.[2] Some sildenafil users have complained of seeing everything tinted blue (cyanopsia).[12] Some complained of blurriness and loss of peripheral vision. In July 2005, the FDA found that sildenafil could lead to vision impairment in rare cases[13] and a number of studies have linked sildenafil use with non-arteritic anterior ischemic optic neuropathy.[14]

Rare but serious adverse effects found through postmarketing surveillance include prolonged erections, severe low blood pressure, myocardial infarction (heart attack), ventricular arrhythmias, stroke, increased intraocular pressure, and sudden hearing loss.[2] In October 2007, the FDA announced that the labeling for all PDE5 inhibitors, including sildenafil, required a more prominent warning of the potential risk of sudden hearing loss.[15]

Care should be exercised by people who are also taking protease inhibitors for the treatment of HIV infection. Protease inhibitors inhibit the metabolism of sildenafil, effectively multiplying the plasma levels of sildenafil, increasing the incidence and severity of side effects. Those using protease inhibitors are recommended to limit their use of sildenafil to no more than one 25 mg dose every 48 hours.[2] Other drugs that interfere with the metabolism of sildenafil include erythromycin and cimetidine, both of which can also lead to prolonged plasma half-life levels.

The use of sildenafil and an α1 blocker (typically prescribed for hypertension or for urologic conditions, such as benign prostatic hypertrophy) at the same time may lead to low blood pressure, but this effect does not occur if they are taken at least 4 hours apart.[16]

Contraindications include:[2]:11

Concomitant use of nitric oxide donors, organic nitrites and nitrates,[17] such as:
isosorbide mononitrate
isosorbide dinitrate
sodium nitroprusside
alkyl nitrites (commonly known as “poppers”)
Concomitant use of soluble guanylyl cyclase stimulators, such as riociguat
Known hypersensitivity to sildenafil
Sildenafil should not be used if sexual activity is inadvisable due to underlying cardiovascular risk factors (such as recent heart surgery, stroke or heart attack, etc.).

Nonmedical use
Recreational use
Sildenafil’s popularity with young adults has increased over the years.[18] Sildenafil’s trade name, Viagra, is widely recognized in popular culture, and the drug’s association with treating erectile dysfunction has led to its recreational use.[19] The reasons behind such use include the belief that the drug increases libido, improves sexual performance,[19] or permanently increases penis size.[20] Studies on the effects of viagra when used recreationally are limited, but suggest it has little effect when used by those not suffering from erectile dysfunction. In one study, a 25-mg dose was shown to cause no significant change in erectile quality, but did reduce the postejaculatory refractory time.[21] This study also noted a significant placebo effect in the control group.[21]

Unprescribed recreational use of sildenafil and other PDE5 inhibitors is noted as particularly high among users of illegal drugs.[22] Sildenafil is sometimes used to counteract the effects of other substances, often illicit.[19] Some users mix it with methylenedioxymethamphetamine (MDMA, ecstasy), other stimulants, or opiates in an attempt to compensate for the common side effect of erectile dysfunction, a combination known as “sextasy”, “rockin’ and rollin’” or “trail mix”.[19] Mixing with amyl nitrite is particularly dangerous and potentially fatal.[19]

Jet lag research
The 2007 Ig Nobel Prize in Aviation went to Patricia V. Agostino, Santiago A. Plano, and Diego A. Golombek of Universidad Nacional de Quilmes, Argentina, for their discovery that sildenafil helps treat jet lag recovery in hamsters.[23][24]

Professional athletes have been documented using sildenafil, believing the opening of their blood vessels will enrich their muscles. In turn, they believe it will enhance their performances.[25][26]

Acetildenafil and other synthetic structural analogs of sildenafil which are PDE5 inhibitors have been found as adulterants in a number of “herbal” aphrodisiac products sold over-the-counter.[27] These analogs have not undergone any of the rigorous testing that drugs like sildenafil have passed, and thus have unknown side-effect profiles.[28] Some attempts have been made to ban these drugs, but progress has been slow so far, as, even in those jurisdictions that have laws targeting designer drugs, the laws are drafted to ban analogs of illegal drugs of abuse, rather than analogs of prescription medicines. However, at least one court case has resulted in a product being taken off the market.[29]

The US FDA has banned numerous products claiming to be Eurycoma longifolia that, in fact, contain only analogs of sildenafil.[30][31][32] Sellers of such fake herbals typically respond by just changing the names of their products.

Detection in biological fluids
Sildenafil and/or N-desmethylsildenafil, its major active metabolite, may be quantified in plasma, serum, or whole blood to assess pharmacokinetic status in those receiving the drug therapeutically, to confirm the diagnosis in potential poisoning victims, or to assist in the forensic investigation in a case of fatal overdose.[33]

Mechanism of action

Crystal structure of human PDE5 with bound sildenafil, PDB entry 1udt[34]
Sildenafil protects cyclic guanosine monophosphate (cGMP) from degradation by cGMP-specific phosphodiesterase type 5 (PDE5) in the corpus cavernosum. Nitric oxide (NO) in the corpus cavernosum of the penis binds to guanylate cyclase receptors, which results in increased levels of cGMP, leading to smooth muscle relaxation (vasodilation) of the intimal cushions of the helicine arteries. This smooth muscle relaxation leads to vasodilation and increased inflow of blood into the spongy tissue of the penis, causing an erection.[35] Robert F. Furchgott, Ferid Murad, and Louis Ignarro won the Nobel Prize in Physiology or Medicine in 1998 for their independent study of the metabolic pathway of nitric oxide in smooth muscle vasodilation.

Sildenafil is a potent and selective inhibitor of cGMP-specific phosphodiesterase type 5 (PDE5), which is responsible for degradation of cGMP in the corpus cavernosum. The molecular structure of sildenafil is similar to that of cGMP and acts as a competitive binding agent of PDE5 in the corpus cavernosum, resulting in more cGMP and better erections.[35] Without sexual stimulation, and therefore lack of activation of the NO/cGMP system, sildenafil should not cause an erection. Other drugs that operate by the same mechanism include tadalafil (Cialis) and vardenafil (Levitra).

Sildenafil is broken down in the liver by hepatic metabolism using cytochrome p450 enzymes, mainly CYP450 3A4(major route), but also by CYP2C9 (minor route) hepatic isoenzymes. The major product of metabolisation by these enzymes is N-desmethylated sildenafil, which is metabolised further. This metabolite also has an affinity for the PDE receptors, about 40% of that of sildenafil. Thus, the metabolite is responsible for about 20% of sildenafil’s action. Sildenafil is excreted as metabolites predominantly in the feces (about 80% of administered oral dose) and to a lesser extent in the urine (around 13% of the administered oral dose). If taken with a high-fat meal, absorption is reduced; the time taken to reach the maximum plasma concentration increases by around one hour, and the maximum concentration itself is decreased by nearly one-third.[36]

Route of administration
When taken by mouth sildenafil for erectile dysfunction results in an average time to onset of erections of 27 minutes (ranging from 12 to 70 minutes).[37]
Under the tongue use of sildenafil for erectile dysfunction results in an average onset of action of 15 minutes and lasting for an average of 40 minutes.[38]
There are also mouth spray preparations of sildenafil for faster onset of action.

I’ve already a 3d-Coat license but need to experiment and not sure if it’s the right tool, and can afford something about Modo Indie, wanted some advice from more experienced users before spending time just searching trying tools I didn’t know.

By ¨¨re modeling¨¨ if you mean to retopologise the mesh,than use topogun.Cheap and the best.

Meaning mesh editing, so polygonal re-modelling of an existing mesh.
Not sure if this is also related to retopolgy, I’m confused also from the fact in 3d-Coat retopo room (something I always associated to create a low poly mesh from an high poly one, that’s not what I want to achieve) there are also mesh editing tools.
In my understanding retopo and mesh editing are two separate activities, but I might be wrong and here the usefulness in asking to you experts.

They are separate tasks, retopo tools are mostly for organic stuff like characters, rocks, clothes, trees, etc. Some of them are fine for certain types of hard surface models, but definitely not for archviz, modular meshes, or meshes that need to snap together and be perfectly flush.

That’s why I’m in doubt if 3d-Coat is good for this kind of work (I still need to experiment, just an idea right now knowing what is good on), will be nice if someone can share his experience with both 3d-Coat and Mari to compare their fit with hard surface polygonal modelling activities.

If that’s all you need to do… Then why not test-drive Nate’s Mesh Tool?
Maybe that’s a bit-too-out-of-the-box thinking or maybe its enough etc.
Meantime anyone following news of Epic’s own Geometry 2.0 Tools?

Will be a good idea, except I’m on UE4 after bad experience with Unity marketplace. Purchased some editor and engine extension to overcome current limitations, and many of them become unsupported from the developer or open sourced (about the same) in less than one year.
After struggling to achieve anything with a moving target of both the engine and the lot of external tools I decided to give UE4 another run. It’s not perfect, but totally another level having all integrated and maintained tools.
So I prefer to rely on tools with bigger than one developer support for primary activities.

Understood, plugins come with risk, even if they ship with Source…
However I’ll just mention one thing that I believe is a positive here.
Plugins that have to ship with a game / archviz release are critical.

Whereas plugins used in Editor at design time may have flexibility…

Lets say a plugin stops working in UE4.20 Editor but doesn’t ship!
As long as you have access to the 4.20 engine on ongoing basis…
You can edit meshes in 4.20 but import the final work into 4.xx etc…

True, but not being my full time activity I need to do things in the time when I have time, without delay. Also learning some more generalist app might be always useful.
I read anyway a new Mesh Tool it’s in a GitHub repo, for free might be worth a test if it’s an official Epic maintained tool.

TopoGun is best in class these days.
Then there’s 3D Coat, Maya 2018, Mudbox and ZBrush (automatic but bad quality)

And the in-engine LOD generators.

Thanks, as written I need more a polygonal modelling tool than a retopo, except if I misunderstood what retopo mean.

I would strongly strongly recommend Blender(free) + HardOps addon(15$ cost one time purchase) from masterxeon101 and other dev’s. And absolutely must have Carver addon(free)
HardOps Blender 3D (2.8): Hard Ops 00987 - Francium

Tutorials HOps

The problem with blender is that first you should use 3d pie menu’s to get around, and most basic settings like edit/object mode, otherwise classic UI with no pie’s its hell, i fly trough blender menus with 3d pie menu, which is an addon included by default but disabled, and sadly many blender settings are all over the place atm, not very organized.
As far as i know there are no other options that are free or as cheap.
Modo would be a nice candidate but hell its expensive lacks tutorials and laggy/buggy program, i tried it as trial for a while, has potentiall but not affordable.

I use blender+hardOps+carver for my modelling and it really is a life saver.
Blender is extremely powerfull but many settings/techniques and addons are not really well known you have to search for them, like Bsurfaces addon(free) workflow for retopology, learned about it a few months ago and its insane that i didnt know about it for years doing manual retopo lol, sucker me.
Link to bsurfaces technique

I dont know what your “hard surface” needs are but thats what i recommend.
Vanilla blender without a proper setup and a few addons(mostly are free) is kinda meh makes it very boring and pale experience out of the box.

If you need normals baking from high res mesh to low res mesh use xNormal or AwesomeBump, the built in blender normal baking is kinda meh, slow and quirky sometimes works sometimes not, thought id mention that aswell.


It’d be great to see these two interfaces demonstrated side by side.
Wonder if there’s a YouTube clip that shows exactly that aspect etc… this video is old pie menus have a few more options nowdays.
Nothing to wonder about, youtube is full of 3D pie menu toturials and its old now like 2-3 years old, the basic interface without it is just a lot of shortcuts and menu clicking annoying.
The reason why its disabled by default is because the old style blender was to use pure shortcut keys and almost no buttons to maximize viewport work area, but not everyone can do shortcuts, i cant remember them i always forget after a while, can only remember few of them. Once i found 3D pie menus i was able to focus more on modelling rather than fighting with the interface.
If you are beginner pie menu’s are a must use IMHO.