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What are good ways to spray paint a QR code on a footpath?
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The QR would be of a URL. The QR should be big enough like 4 A4 size papers. I though of cutting out the white boxes from a printed paper and spray on it but what about white dot islands. The precision needs to be good enough for a cell phone camera to detect it on the floor from standing distance.
painting
asked 8 hours ago
thevikasthevikas
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The QR would be of a URL. The QR should be big enough like 4 A4 size papers. I though of cutting out the white boxes from a printed paper and spray on it but what about white dot islands. The precision needs to be good enough for a cell phone camera to detect it on the floor from standing distance.
painting
asked 8 hours ago
thevikasthevikas
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1
How about making two copies of the QR code and in each version cut out the boxed from every second row only. Then spray one stencil first and place the second stencil at the same position before you spray it (the result will depend on how exact you can position both stencil at the same spot...)
– user36296
7 hours ago
thats a great way to solve the islands. ill try.
– thevikas
6 hours ago
add a comment |
The QR would be of a URL. The QR should be big enough like 4 A4 size papers. I though of cutting out the white boxes from a printed paper and spray on it but what about white dot islands. The precision needs to be good enough for a cell phone camera to detect it on the floor from standing distance.
painting
asked 8 hours ago
thevikasthevikas
1062 bronze badges
New contributor
thevikas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
The QR would be of a URL. The QR should be big enough like 4 A4 size papers. I though of cutting out the white boxes from a printed paper and spray on it but what about white dot islands. The precision needs to be good enough for a cell phone camera to detect it on the floor from standing distance.
painting
painting
asked 8 hours ago
thevikasthevikas
1062 bronze badges
New contributor
thevikas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 8 hours ago
thevikasthevikas
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thevikas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked 8 hours ago
thevikasthevikas
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thevikas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked 8 hours ago
thevikasthevikas
1062 bronze badges
asked 8 hours ago
thevikasthevikas
1062 bronze badges
1062 bronze badges
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1
How about making two copies of the QR code and in each version cut out the boxed from every second row only. Then spray one stencil first and place the second stencil at the same position before you spray it (the result will depend on how exact you can position both stencil at the same spot...)
– user36296
7 hours ago
thats a great way to solve the islands. ill try.
– thevikas
6 hours ago
add a comment |
1
How about making two copies of the QR code and in each version cut out the boxed from every second row only. Then spray one stencil first and place the second stencil at the same position before you spray it (the result will depend on how exact you can position both stencil at the same spot...)
– user36296
7 hours ago
thats a great way to solve the islands. ill try.
– thevikas
6 hours ago
1
1
How about making two copies of the QR code and in each version cut out the boxed from every second row only. Then spray one stencil first and place the second stencil at the same position before you spray it (the result will depend on how exact you can position both stencil at the same spot...)
– user36296
7 hours ago
How about making two copies of the QR code and in each version cut out the boxed from every second row only. Then spray one stencil first and place the second stencil at the same position before you spray it (the result will depend on how exact you can position both stencil at the same spot...)
– user36296
7 hours ago
thats a great way to solve the islands. ill try.
– thevikas
6 hours ago
thats a great way to solve the islands. ill try.
– thevikas
6 hours ago
add a comment |
2 Answers
2
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oldest
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One approach to avoid the "island" problem could be to split the pattern into two stencils. In each stencil only the holes of every other row are cut out.
First colour is applied to one of the stencils. Then the stencil is exchanged and the colour is applied to the other stencil.
The weak point of this approach is that both stencil need to be placed at the same position.
answered 5 hours ago
user36296user36296
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Your islands can become insignificant by creating stencil like bridges to the more solidly founded segments. A bridge of a few millimeters will bleed paint underneath but also will be small enough to be ignored by the QR software from a distance appropriate to the size of the code print. If the few millimeters is excessive, hot glue applied to ordinary sewing thread in more locations (spider web?) will provide the support and almost assure bleed under.
answered 6 hours ago
fred_dot_ufred_dot_u
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2 Answers
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2 Answers
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One approach to avoid the "island" problem could be to split the pattern into two stencils. In each stencil only the holes of every other row are cut out.
First colour is applied to one of the stencils. Then the stencil is exchanged and the colour is applied to the other stencil.
The weak point of this approach is that both stencil need to be placed at the same position.
answered 5 hours ago
user36296user36296
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user36296 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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One approach to avoid the "island" problem could be to split the pattern into two stencils. In each stencil only the holes of every other row are cut out.
First colour is applied to one of the stencils. Then the stencil is exchanged and the colour is applied to the other stencil.
The weak point of this approach is that both stencil need to be placed at the same position.
answered 5 hours ago
user36296user36296
1314 bronze badges
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user36296 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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One approach to avoid the "island" problem could be to split the pattern into two stencils. In each stencil only the holes of every other row are cut out.
First colour is applied to one of the stencils. Then the stencil is exchanged and the colour is applied to the other stencil.
The weak point of this approach is that both stencil need to be placed at the same position.
answered 5 hours ago
user36296user36296
1314 bronze badges
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user36296 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
One approach to avoid the "island" problem could be to split the pattern into two stencils. In each stencil only the holes of every other row are cut out.
First colour is applied to one of the stencils. Then the stencil is exchanged and the colour is applied to the other stencil.
The weak point of this approach is that both stencil need to be placed at the same position.
answered 5 hours ago
user36296user36296
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user36296 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 5 hours ago
user36296user36296
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answered 5 hours ago
user36296user36296
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answered 5 hours ago
user36296user36296
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Your islands can become insignificant by creating stencil like bridges to the more solidly founded segments. A bridge of a few millimeters will bleed paint underneath but also will be small enough to be ignored by the QR software from a distance appropriate to the size of the code print. If the few millimeters is excessive, hot glue applied to ordinary sewing thread in more locations (spider web?) will provide the support and almost assure bleed under.
answered 6 hours ago
fred_dot_ufred_dot_u
3,2941 gold badge3 silver badges8 bronze badges
add a comment |
Your islands can become insignificant by creating stencil like bridges to the more solidly founded segments. A bridge of a few millimeters will bleed paint underneath but also will be small enough to be ignored by the QR software from a distance appropriate to the size of the code print. If the few millimeters is excessive, hot glue applied to ordinary sewing thread in more locations (spider web?) will provide the support and almost assure bleed under.
answered 6 hours ago
fred_dot_ufred_dot_u
3,2941 gold badge3 silver badges8 bronze badges
add a comment |
Your islands can become insignificant by creating stencil like bridges to the more solidly founded segments. A bridge of a few millimeters will bleed paint underneath but also will be small enough to be ignored by the QR software from a distance appropriate to the size of the code print. If the few millimeters is excessive, hot glue applied to ordinary sewing thread in more locations (spider web?) will provide the support and almost assure bleed under.
answered 6 hours ago
fred_dot_ufred_dot_u
3,2941 gold badge3 silver badges8 bronze badges
Your islands can become insignificant by creating stencil like bridges to the more solidly founded segments. A bridge of a few millimeters will bleed paint underneath but also will be small enough to be ignored by the QR software from a distance appropriate to the size of the code print. If the few millimeters is excessive, hot glue applied to ordinary sewing thread in more locations (spider web?) will provide the support and almost assure bleed under.
answered 6 hours ago
fred_dot_ufred_dot_u
3,2941 gold badge3 silver badges8 bronze badges
answered 6 hours ago
fred_dot_ufred_dot_u
3,2941 gold badge3 silver badges8 bronze badges
answered 6 hours ago
fred_dot_ufred_dot_u
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answered 6 hours ago
fred_dot_ufred_dot_u
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1
How about making two copies of the QR code and in each version cut out the boxed from every second row only. Then spray one stencil first and place the second stencil at the same position before you spray it (the result will depend on how exact you can position both stencil at the same spot...)
– user36296
7 hours ago
thats a great way to solve the islands. ill try.
– thevikas
6 hours ago