The most common and most likely answer to this crossword clue is the 13 letter word BADGER-LEGGED
B
A
D
G
E
R
-
L
E
G
G
E
D
Buddy explains!
The straight part
We know that "with pins of different sizes" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case with pins of different sizes = badger-legged.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.