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Hello:

I have just noticed that when I try to hide part of an object or painting, Affinity Designer has different results depending on using Eraser or a black brush:

 

image.png.4af5034e872f75758768e9eb9829b7b7.png

 

As you can see, both are masks.

Using brush tool selecting a 100% black, it doesn´t paint 100% and part of the rectangle is still visible.

Eraser paint 100% black and hide successfully the part painted in the mask.

 

I think this shouldn´t work like this, right?

 

Thank you very much.

 

 

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16 hours ago, spsorrel said:

I have just noticed that when I try to hide part of an object or painting, Affinity Designer has different results depending on using Eraser or a black brush:
As you can see, both are masks.
Using brush tool selecting a 100% black, it doesn´t paint 100% and part of the rectangle is still visible.
Eraser paint 100% black and hide successfully the part painted in the mask.
I think this shouldn´t work like this, right?

With me it works as expected. What tool settings do you have?

image.png.bd78f1b0f041384afd582d08b7b8c474.png


My Specs:
- Processor: AMD Phenom™ II X4 955 Processor 3.20 GHz- RAM: 8 GB
- Graphics card: NVIDIA GeForce GTS 250
- Monitor: SyncMaster F2380 (resolution 1920x1080)
- Operating system: Windows 10 Pro (1803) / 64 bit

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Hello Michail:

By steps:

1. I draw the rectangle.

2. I change to pixel persona.

3. I take a basic brush:

image.png.360dfecceaa30e4a1dde783597524ba0.png

4. I grab the brush tool.

5. I change colour to 100% black:

image.png.8b14f9c5a3ce741e9ee75a047caecd4e.png    image.png.bd29d925a6b46045c0efab0b492e10ba.png

6. I keep opacity and flow at 100% and I do not protect alpha:

image.png.26997717b6234af29c241e7fd96ded6c.png

7. I create a mask keeping 100% opacity.

image.png.26518c65437ab932ee92a6c6ad7ae68c.png

8. I paint and the result is:

image.png.173a1493c312549b32a361ba64af0f63.png

 

I dont know why you get the part of the square completely hiden, but I cannot get that unless I use eraser tool...

 

Thank you very much.

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You're using a Hardness value of 0 for your brush, which gives a soft (sort of feathered) edge, as you can see at the right-hand edge of the blue part of your rectangle. It also would give you a smaller apparent brush size (narrower brush). Possibly with that hardness setting you need to go over the areas you're erasing again, to make sure you've really painted black over everything?


-- Walt

Windows 10 Home, version 1909 (183623.476),
   Desktop: 16GB memory, Intel Core i7-6700K @ 4.00GHz, GeForce GTX 970
   Laptop:  8GB memory, Intel Core i7-3625QM @ 2.30GHz, Intel HD Graphics 4000 or NVIDIA GeForce GT 630M
Affinity Photo 1.8.3.641 and 1.8.4.650 Beta   / Affinity Designer 1.8.3.641 and 1.8.4.650 Beta  / Affinity Publisher 1.8.3.641 and 1.8.4.651 Beta.

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Hello walt.farrel:

That´s not the problem, I have passed the brush many times and the rectangle remains visible at its righ part.

Thank you.

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31 minutes ago, spsorrel said:

That´s not the problem, I have passed the brush many times and the rectangle remains visible at its righ part.

But did you try bumping the hardness to 100 to see if that resolves it?


-- Walt

Windows 10 Home, version 1909 (183623.476),
   Desktop: 16GB memory, Intel Core i7-6700K @ 4.00GHz, GeForce GTX 970
   Laptop:  8GB memory, Intel Core i7-3625QM @ 2.30GHz, Intel HD Graphics 4000 or NVIDIA GeForce GT 630M
Affinity Photo 1.8.3.641 and 1.8.4.650 Beta   / Affinity Designer 1.8.3.641 and 1.8.4.650 Beta  / Affinity Publisher 1.8.3.641 and 1.8.4.651 Beta.

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11 hours ago, spsorrel said:

I dont know why you get the part of the square completely hiden, but I cannot get that unless I use eraser tool...

Thanks for the detailed documentation.
When I look at the result, I can only think of two possibilities:

  1. The brush color is not really black. It looks more like a 90 percent black. Check it again. Draw a line and then double-click on the corresponding color field of the color selector. image.png.a640fee493988aca93d2c7998cc5ca9f.png
     
  2. You may have set an accumulation of less than 100%. Check this by clicking on the "More" ("Más") button at the top of the context bar.
    image.png.812cb617149c3caf79460659b8e9e0e4.png
     
  • Do you work with a mouse or with a pressure-sensitive pen?
  • Can you possibly attach the file?

My Specs:
- Processor: AMD Phenom™ II X4 955 Processor 3.20 GHz- RAM: 8 GB
- Graphics card: NVIDIA GeForce GTS 250
- Monitor: SyncMaster F2380 (resolution 1920x1080)
- Operating system: Windows 10 Pro (1803) / 64 bit

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Hello everyone:

20 hours ago, walt.farrell said:

But did you try bumping the hardness to 100 to see if that resolves it?

It shouldn´t make any different, but I have just tried and it gives the same result.

 

9 hours ago, Michail said:

Thanks for the detailed documentation.
When I look at the result, I can only think of two possibilities:

  1. The brush color is not really black. It looks more like a 90 percent black. Check it again. Draw a line and then double-click on the corresponding color field of the color selector. image.png.a640fee493988aca93d2c7998cc5ca9f.png
     
  2. You may have set an accumulation of less than 100%. Check this by clicking on the "More" ("Más") button at the top of the context bar.
    image.png.812cb617149c3caf79460659b8e9e0e4.png
     
  • Do you work with a mouse or with a pressure-sensitive pen?
  • Can you possibly attach the file?

Yes, the accumulation is at 100%.

image.png.55354c0dc3b5b005044503a6f8ab7dca.png

 

Thanks.

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Hello Sean P:

Thanks for the answer. Yes, I think it was in CMYK. I don´t really remember it, but I used to use the preset of A4 (ready for printing), and it is configured in CMYK.

I have tried in RGB and it works as expected: 100% black brush erase 100% the shape.

Thank you.

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