The Tamworth Men's Shed will have to find a new compressor after two of theirs were stolen.
The thieves stole the compressors late last week and were prepared, committee member Rob Hardie said.
"They came in with bolt-cutters and cut the chains [connected to the compressors]," he said.
"They were chained up so they've come prepared. You'd need two people to carry them."
Mr Hardie said the thieves came to the Men's Shed from the rear to avoid detection from security cameras.
"Our cameras don't quite pick up [that area] but we've got two more cameras that are going to come in to fix that problem," he said.
The loss of the compressors has slowed the community group's work down.
"Guys can do their [work] but I can't do mine. We can't really finish any projects unless we have our compressor," Mr Hardie said.
"I just can't understand why people would take it from a charity.
"It's just, sort of, made me feel like I didn't want to come up here anymore."
While the compressor will be covered by insurance, Mr Hardie said any costs would hurt the group.
"We have a lot of equipment here but we're always after [upgraded] stuff and then you have this - it's another expense we can't afford," Mr Hardie said.
He added: "We're a community shed, we do a lot for the community, we push ourselves and we're always looking for new members, active members.
"We're always looking for people who want things done, we're always looking for equipment. We've gotta keep upgrading.
"It's [compressor] something we need pretty well quick smart.
"It's very heartbreaking for me."