Woodworking Circle-Drawing Tool with Movable Marker Holder
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Solution Overview
Problem
Existing stencils for drawing target circles on wooden axe throwing boards are cumbersome, requiring frequent unfastening and reattachment of the marker, which can lead to tilting and inaccurate markings.
Innovation Solution
A woodworking circle-drawing tool featuring a releasable anchor with a center-slotted screw fastener and a support bar with a marker holder that can be moved along the bar, allowing for the drawing of different sized circles without removing the marker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the stencil is tightly screwed onto the wooden axe throwing board, then the stencil remains stable and does not rock, but the stencil becomes hard to rotate about the pivot point
Solution Approach 1:
The stencil incorporates a pivot mechanism that allows dynamic adjustment between a locked stable position for accurate drawing and an unlocked rotated position for repositioning. The pivot point enables the stencil to transition between these states, resolving the contradiction between stability and ease of rotation.
2Ease of operation
If the stencil is loosely screwed onto the wooden axe throwing board, then the stencil is easy to rotate about the pivot point, but the stencil rocks and does not allow perfect circles to be drawn
Solution Approach 1:
The pivot mechanism allows the stencil to be easily rotated when needed, then locked into a stable position for precise circle drawing. This dynamic system resolves the contradiction by enabling the stencil to achieve both ease of rotation and drawing precision at different operational stages.
3Adaptability or versatility
If the marker is removed from the stencil each time when drawing different sized target circles, then the stencil can be repositioned, but the pivot point can be tilted and cause unwanted marks
Solution Approach 1:
The stencil is divided into separable components including the pivot assembly and the marker holder assembly. This segmentation allows the marker to be easily detached and repositioned along the support bar to draw different sized circles without removing the entire stencil from the board, thus maintaining pivot point stability while achieving versatility.
Solution Approach 2:
The marker holder is designed with a dynamic positioning system that allows it to be moved along the support bar to different locations corresponding to different circle radii. This dynamic adjustment enables versatile circle sizing without compromising the stability of the pivot point anchored to the board.
4Adaptability or versatility
If the marker is repeatedly attached and detached from the stencil, then different sized circles can be drawn, but the pivot point becomes tilted and causes inaccurate markings
Solution Approach 1:
The stencil design segments the marker holding function from the pivot anchoring function. The marker can be easily attached and detached from the marker holder without affecting the pivot point's position on the board, thus maintaining marking accuracy while enabling versatile circle size adjustment.
Data Source
AI summary
A woodworking circle-drawing tool is an apparatus that enables the user to draw precise circles for an axe throwing target. The apparatus includes a support bar, a releasable anchor, a marker holder, a holder clamp, and a small-target stencil. The support bar serves to support the operation of the releasable anchor, the marker holder, and the small-target stencil. The support bar also serves to keep the marker holder at different distances from the releasable anchor to draw the different sized circles. The releasable anchor serves to secure the apparatus to the target board using an appropriate fastener. The holder clamp enables the secure attachment of the marker holder to the support bar. The marker holder enables the attachment of a marker that can be used to draw the target circles using the apparatus. The small-target stencil enables the drawing of smaller circles often found in axe throwing targets.