If you are using a Windows machine make your own.
Use the Command window to run a COPY command to concatenate several copies of your swap file. Then run it again concatenating a few copies of the results of the first COPY. It can get big very fast.
COPY swapfile+swapfile+swapfile+swapfile newswapfile
COPY newswapfile+newswapfile+newswapfile newswapfile2