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Concealed Post Base for Round Log Posts
Our Round Knife Plate is a heavy-duty cold rolled steel post base built to anchor round logs to floors, decks, concrete and footings. The 10" knife slides into a slot cut in the bottom of your log, so the connection stays hidden and the natural beauty of the log stays front and center. The round base follows the shape of the log for a clean, finished look from every angle.
Specifications
- Material: Cold rolled steel
- Finish: Raw steel (unfinished)
- Base plate: ½" thick round base with four ¾" mounting holes
- Knife plate: 10" tall × 4" wide × ¼" thick
- Base sizes: 8" round or 10" round
- Best for: Round logs and log posts
- Includes: Knife plate only. Fasteners, nuts and bolts are sold separately.
Where to Use a Log Post Knife Plate
- Log stair posts and newel posts
- Log deck posts
- Entryway and porch posts
- Freestanding log signs
- Log pergolas
- Mailbox posts
- Gazebos and pavilions
- Fence and gate posts
- Arbors and garden trellises
- Outdoor lamp posts
Why Choose a Knife Plate Post Base?
Unlike traditional post brackets that wrap around the outside of a post, a knife plate sits inside the log. You get a strong steel connection without bulky visible hardware, which makes it a favorite for rustic, log and timber-frame builds where appearance matters.
Frequently Asked Questions
What size round knife plate do I need?
Choose the base size closest to your log's diameter: the 8" base for logs around 8" and the 10" base for logs around 10".
How does a knife plate install?
The base is fastened to your floor or footing through the four ¾" holes. A slot is cut into the end of the log to receive the 10" knife, and the log is then secured to the knife.
Can I use this outdoors?
Yes, with a protective coating. Knife plates ship in a raw steel finish, which will rust if left exposed to the weather. For outdoor use, we recommend painting or powder coating before installation. Raw steel can also be left to patina for a rustic look.
Are fasteners included?
No. Each knife plate ships as the steel plate only. Choose anchors for your floor or footing (concrete, wood deck, etc.) to fit the four ¾" base holes, and bolts sized for your log to secure it to the knife.