Thanks for the images posted as this makes a huge difference in commenting. Considering those images I really don’t think you want to be using any sort of bit mapped software for “originals”.

What you want here is vector based art work at the minimum. A 3D solid molded might have some advantages but a 2D CAD file would also work.

Quote Originally Posted by JohnnyScience View Post
Thanks for the responses, I apologize for the delay.

So most of what I want are images that I have as jpeg that are either 1600x1600 or 3500x3500 pixels

They range from basic, to a bit more detailed on a few.

What do you guys think?

The last one titled Christen lamen is the most detailed, but on average it's the basic line drawings
Yes it is the fact they are basic line drawings that suggest moving to a vector based image would be a good idea. It would be a bad idea to try to stretch or compress any bit map and expect good results. Scaling algorithms have gotten much better but there is a real limit and exceeding those limits can lead to artifacts in your image.

Some of your images might be suitable for parametric modeling where one file defines the shap and allows scaling to fit the various board sizes you want to engrave. On the other hand a good CAD program or a vector based drawing program will let you reproduce these rather fast. There are a number of free 2D CAD capable apps online, I’d look at one of these to generate your drawings in.
I'm looking to have them engraved on wood panels 20x20 inches

Will I get high quality engraving from these images once converted for CNC?
That depends on many factors, in general you will be far better off generating CAD (vector) drawings for this artwork. This especially if we are talking any sort of production
Also, are the vector images I'm used to associating with photoshop the same kind that are used for CNC? If so I could have someone convert them for me and then just need to find someone to convert them to the proper CNC file
Photo shop does bitmaps, at least to the best of my knowledge as I’ve never used Photoshop. There are better online descriptions of the differences between vector based images and bitmaps than I can reproduce here. In simple terms though vector based images are formed from a set of instructions that are used to draw an image. Vector based drawings can be precise.

As for the conversion it would really pay to learn to do this yourself. A couple of reasons here, one is that the images are simple and a good place to learn CAD. Another reason is that you may need to tweak the files to get the results you want in wood. The big problem is the sharp angles that may be hard to reproduce with the tooling you may be using. This is likely why the laxer suggestion was made above. In any event the tooling you use wil likely impact how some of those corners will look. Sometimes you can tweak the drawings to improve the the result in hard materials other times you will need different tooling. In other words it may be a bit difficult to reproduce some of those very sharp angles in a way that you like on a router. Depth of cut and cutter design all impact how the images will be reproduced in wood.