It's proper name is a glazebuster, if you are going to do it, do it properly, don't use a bodge approach because if you get it wrong, new block time.
Even if you only ever use it once, its better to do it once properly than have to do it again and bodge it again. Buy it use it, sell it on eBay if you aren't going to use it again, ours has only been used about 5 times, either on motocross bikes or on lawnmowers (yes really), it has to be one of the most useful project tools ever.