rebuilding a Calumet C1 - need knob help

Mark Fisher

Member

Joined

Dec 13, 2003

Messages

1,691

Location

Chicago

Format

Medium Format

• Oct 5, 2009

• #1

All the plastic knobs are broken and I need to replace them. The problem is they are seriously stuck on the studs (haven't tried the ones that look pinned on yet). I've even broken off the plastic (there is a brass insert unterneath) and tried a propane torch to loosen them up. Any thoughts?

 

juan

Member

Joined

May 7, 2003

Messages

2,706

Location

St. Simons I

Format

Multi Format

• Oct 5, 2009

• #2

Go to the auto parts store and buy a spray can of "PB Blaster" - that should penetrate the threads. Spray, knock on the broken knobs with a hammer to set up vibrations, then let it sit overnight.

I've found knobs that will work at my local Ace Hardware.
juan

 

wa1vgb

Member

Joined

Apr 11, 2009

Messages

13

Location

Maine,Usa

Format

35mm

• Oct 5, 2009

• #3

You can remove those very easily with a cold chisel and hammer. Support on a vise or something solid. The brass will split.