Most of his art is in the-/co/llection booruhttp://the-collection.booru.org/index.php?page=post&s=list&tags=splooge
When he posts to 4chan, he has a distinct filename scheme. He numbers all his drawings sequentially, e.g. with 1415808.jpg. Occasionally he skips ranges of numbers, also he doesn't just use JPG, he uses multiple file formats (so if you try searching for a number, don't include the file extension).
You can find all his posts if you scrape the archives for numbers near this range, but you'll need to eliminate a lot of false positives.
He has a tumblr, but he only posts a small portion of what he draws to it:https://motamotahead.tumblr.com>>92249509>by the time the user posts more art this thread will be dead anyway.
It's useful for anyone who's searching one of the /co/ archives, e.g.https://boards.fireden.net/co/https://desuarchive.org/co/https://yuki.la/co/
to have the link to the artist instead of some random booru user.