Step 1: Get patients and tools
Fortunately, most Gummi Bears are hypochondriacs so even if they don't have a problem right away you can usually convince them to go under the knife in less than a minute. There might be some ethics problem here, but we couldn't think of it and moved on to the slicey dicey fun.
Make sure you have a clean scalpel and metal tubing available. The second picture shows the exact knife you shouldn't use. Dried Gummi gore should be wiped off with a paper towel or you can replace the whole blade. Don't use your tongue to clean! Is bad!