Laser leg

[Agroshield]

FWIW, cameras introduce distortion so for a simple part like that, drop it onto a scanner next time...

Another good option is to use 5mm squared paper as a background to any photos you take*. Even better if you line up one or more part edges with a feint line on the paper. Then, even if the photo does end up horribly distorted, you have some chance of straigthening it out knowing the lines on the paper are regularly spaced. It's like turning on the grid in the Fusion shots above.

*Cheap cutting mats have a 10mm grid on them that can also be used.

 

[ukracer]

Interesting to watch all this . Presuming it is a copy of the existing leg. Just scribe around it and cut it out and drill job done . It seems to a luddite (me) either I'm missing something or it's being over complicated by tech or perhaps some sort of learning exercise.

Yes and yes.

I could create one either by hand or on my bridgeport. BUT I was away at the weekend with no bridgeport in the caravan. I tried to create one on the computer but my wife had a mini fit (she suffers from epilepsy) ( not had one for about 4 years).

So I was trying to gain time by being able to press a button when I got home. It's a complex life I have currently. I am trying to declutter but make accessible the stuff I have that I am keeping.
Much of what I have needs work/cleaning/putting together etc .

I have fingers in too many pies and find it hard to get things stick in my head....so learning was another reason for me asking for a screen recording so I could watch how to do it for the future.

 

[James1979]

If you are doing image scaling - I use it where I can as I get given “stuff” to copy a lot - my big tip would be get the photo as perfect as you can.

I made a jig after a bit of messing about.

It’s all 10mm plate as that’s what I had but anything solid will do.

Basically the phone camera looks through the hole.

Everything is perfectly square to the surface the jig stands on which ideally is flat.

The height took some getting because it’s the focal length (?) of the camera.

It can be scaled. Probably not the most convenient for most but it’s how I did it.

Usually the photos are spot on now.

Not near so no pic as such but sketch to show what I mean…….

A couple of LED work lights to cancel shadows is useful too

 

[Screwdriver]

Looks like you've lost the aspect ratio. Mine measured pretty close +-2mm of what @ukracer posted

I better double check that, sounds plausible. Just set up a new M1 MacMini and running this ancient version of Sketchup is fraught!

Interestingly, I had to get this new (to me) Mac so that I can run Fusion360...

 

[Screwdriver]

OK. Interesting. A quick check reveals the PNG file has some strange extra space at the top. Possibly a transparency with text that says "text" and a random character that looks like an "I" in white. It is shown below but you might struggle to see it in this screenshot.

So is that an artefact of my system or some weirdness in the PNG file?

Can someone post say a JPG of the original PNG image at exactly 1184, 1000 so I can see if that somehow "fixes" the assumed error? I don't see how I am otherwise changing the aspect ratio here though it is very similar to the amount you might see with square vs. unsquare pixel aspect ratio.

Meanwhile I will import a circle and see if there's something going on because at the moment, I am happy with the aspect ratio of my original import...

 

[Screwdriver]

Nothing wrong with my aspect ratio here.

Made a perfect circle, screenshot to PNG, re imported to Sketchup and it is pixel perfect. I drew a circle around the imported "texture" image.

It must be an issue with the original png somehow relating to that strange artefact. My workflow here is bang on.

 

[Erie Fred]

That simple bracket shouldn't take over 5 minutes to draw correctly in CAD.
By measuring and drawing, no fancy pix conversion software needed.

 

[Screwdriver]

That simple bracket shouldn't take over 5 minutes to draw correctly in CAD.
By measuring and drawing, no fancy pix conversion software needed.

Yes but in this forum we like to help others when they ask for it.

Teaching, training, education etc. can follow but I assume the OP would like to get this machine fixed so that they can crack on with something else.

 

[ukracer]

That simple bracket shouldn't take over 5 minutes to draw correctly in CAD.
By measuring and drawing, no fancy pix conversion software needed.

Everything is easy when you know how.

 

[ukracer]

Yes but in this forum we like to help others when they ask for it.

Teaching, training, education etc. can follow but I assume the OP would like to get this machine fixed so that they can crack on with something else.

Feeling good today. Extra day off from Grandkids....just been and emptied my trailer so I can refit boards.

Got something printing will see how it turns out later.
Big thanks to all who have drew things and given input.
But yes that artifact at the top is text. The file was more to give dimensions as I know its easy for some to draw this fast.

 

[ukracer]

 

[Erie Fred]

Yes but in this forum we like to help others when they ask for it.

Teaching, training, education etc. can follow but I assume the OP would like to get this machine fixed so that they can crack on with something else.

Teaching how to model is faster and easier than all this photo junk.
The photo crutch is more for art work.
Hard numbers for parts that must bolt up to each other needs drawn with hard dimensions.

 

[mtt.tr]

Teaching how to model is faster and easier than all this photo junk.
The photo crutch is more for art work.
Hard numbers for parts that must bolt up to each other needs drawn with hard dimensions.

Nonsense, some parts are far too awkward to measure quickly.

Some jobs it's quicker to just photo, scale and trace. It's a valuable tool.


A sledge hammer is probably quicker for driving nails but I won't use it for hanging pictures

 

[Screwdriver]

Teaching how to model is faster and easier than all this photo junk.
The photo crutch is more for art work.
Hard numbers for parts that must bolt up to each other needs drawn with hard dimensions.

Do you have an example of a part you have modelled in 3d?

 

[daedalusminos]

Photographing and scaling or scanning definitely has its place - if you're dealing with unknown angles and curves.

Important not to fill the lens with the part to minimise distortion, keep it central, square on and use telephoto if possible.

This is definitely not an application I'd use it, so easy to measure and assume angles are 90.

 

[mtt.tr]

Photographing and scaling or scanning definitely has its place - if you're dealing with unknown angles and curves.

Important not to fill the lens with the part to minimise distortion, keep it central, square on and use telephoto if possible.

This is definitely not an application I'd use it, so easy to measure and assume angles are 90.

I agree,

The discussion in regards an image is because the original posted image didn't measure