You may include pictures (perhaps of your latest project, or that jig you developed) into your forum posting.
Using the "insert/edit image" icon in the toolbar above where you are typing (the icon looks like a little tree) you can then select the image to be included from the files on your computer.

If you have any difficulty in stepping through this process, just drop me a note and I will help.
It's best if you resize the pictures so that they are a smaller size and suitable for the web…. Your file doesn't need to be 4 megabytes in size for viewing on the screen… Most image programs will now give you an option to resize for the web or for e-mail…
As questions on this topic develop, I'll use them to post a detailed "how-to" along with answers to those questions.
Roger