A good tasting oneand what do I use as a side dish?
The most common plastic used is UHMW (Ultra High Molecular Weight) It is cheaper than Delrin and the likeWhite in colour you may have seen cutting boards , cutting beds on die clicker pressesSelf lubricating hard but toughIt machines up very nice.
Hard plastics like what you want are hard because hard particles are dispersed in themThey will likely be more expensive and possibly harder to machine than aluminumA popular plastic for machining is Delrin but it isn't very abrasion resistantFor your molding it might be fineYou could try carbon steel (cheap) or a zinc die cast alloy (semi-cheap).
This is My meatloaf recipeTo 2 pounds of ground beef, add 2 eggs, about 3/4 cup of bread crumbs, I don't measure I just add enough to make the meat slightly dry, then add some water to moisten the bread crumbsIt is important for the textureThen season with salt, pepper, garlic powder, dry parsley flakes to taste, and 1 small diced onionMix very wellshape into a loafLine a baking pan with non stick aluminium foilCoat the bottom with olive oil, then rub the loaf with olive oilThat will give it a nice outer crustPlace in the pan and bake uncovered at 400 degrees for 1 hourThe best side is mashed potatoes, gravy, biscuits and cream style or whole kernel cornIf Your have any left over make meatloaf sandwiches for lunch.
