What the thread found

• Standard f/j brackets may not fit camera sleds with 3/4 inch arm posts, as common bracket designs are sized for 5/8 inch posts
• PRO-GPI and cinewidgets brands offer sturdy brackets that have proven durable over extended use
• Metric measurements can differ from imperial equivalents by small amounts that accumulate into fitting problems when tolerances are tight
• Removable arm posts can sometimes be replaced with standard metric or smaller diameter posts to enable use of available brackets
• Contacting bracket manufacturers directly may yield custom solutions or modifications for non-standard post sizes

Depends on

• The original poster's final solution was not documented in the thread
• Discussion involves older equipment from around 2011 with limited current availability
• One user's actioncam setup used metric posts while another used imperial measurements, creating ambiguity about whether the 3/4 inch measurement was accurate
• No specific dimensions for PRO-GPI brackets were provided in the discussion

Parts

Arm Post

Same gear or parts

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