I thought it was lacquer thinner.
( I ( ( thought ( it ( ( was lacquer ) thinner ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD thought) (SBAR (S (NP (PRP it)) (VP (VBD was) (ADVP (RB lacquer)) (ADJP (JJR thinner)))))) (. .)))
I didn't think it was at first, but it turns out what I was trying to use was actually lacquer thinner, so that would explain why it wasn't working.
( ( ( ( ( I ( ( did n't ) ( think ( it ( was ( at first ) ) ) ) ) ) , ) but ) ( it ( ( turns out ) ( what ( I ( was ( trying ( to ( use ( ( ( ( ( was actually ) ( lacquer thinner ) ) , ) so ) ( that ( would ( explain ( why ( it ( ( was n't ) working ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (PRP I)) (VP (VBD did) (RB n't) (VP (VB think) (SBAR (S (NP (PRP it)) (VP (VBD was) (PP (IN at) (NP (JJ first))))))))) (, ,) (CC but) (S (NP (PRP it)) (VP (VBZ turns) (PRT (RP out)) (SBAR (WHNP (WP what)) (S (NP (PRP I)) (VP (VBD was) (VP (VBG trying) (S (VP (TO to) (VP (VB use) (SBAR (SBAR (S (VP (VBD was) (ADVP (RB actually)) (NP (NN lacquer) (JJR thinner))))) (, ,) (CC so) (SBAR (WHNP (WDT that)) (S (VP (MD would) (VP (VB explain) (SBAR (WHADVP (WRB why)) (S (NP (PRP it)) (VP (VBD was) (RB n't) (VP (VBG working))))))))))))))))))) (. .)))