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Jon Ellison wrote:

> Hi Phil
>
> What exactly do you mean by a "planar leveling mark" ?
>

Here's the 'short form' of the process:
Quote

1. You have a block of stone whose specification is that it should be 41" call with a flat planar face on top. First, it is VERY roughly cut to a planar surface to get rid of the bulk of hte excess stone. To do this, you indicate the 41" height by drawing lines around the entire perimeter of the stone to delineate the height of 41". Since the stone is only "rough cut", you might actually have different regions that are exactly 41" high while other, rougher regions are up to 41.5" or 42" high, etc. So you need a way to trim the excess height down to the perimeter marking without huge circular saws and lasers. You need to use a guide that helps you chisel off the excess stone and that lets you know when it's really perfectly flat at nominal height and not hilly or too bumpy, etc.

2. The "guide" that allows you to cut the stone at nominal height and with a flat plane surface is a thick veneer block of stone, wood, or copper that's stiff and flat enough of a plane according to engineering specs; you paint one of the guide's planar faces red and then lay that painted face on top of the rough-cut block of stone. (the veneer must be very rigid and not bend and bow).

3. Then immediately remove the veneer, and you will see paint spots on the highest peaks where the rough cut block touched the veneer. When you see a large concentration of peaks in one area, this means those peaks must be chiseled off in order to slightly lower that part of the block of stone. If the entire veneer is still too high compared to the perimeter spec line, then ALL red dots need to be chiseled off.

4. Repeat #2 and #3 until the plane of the block shows an even distribution of red dots and the veneer is down to the level of the perimeter line that demarcates the nominal height for that block.
This is exactly what those stray dots suggest on several blocks photographed by Colette Dowell in Campbell's Chamber.



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Subject Views Written By Posted
About Those Two Dots.... 480 Scott Creighton 06-Sep-14 10:54
Re: About Those Two Dots.... 195 Jon Ellison 06-Sep-14 12:15
Re: About Those Two Dots.... 134 Skatha 06-Sep-14 17:24
Re: About Those Two Dots.... 195 Origyptian 06-Sep-14 18:12
Re: About Those Two Dots.... 208 Jon Ellison 06-Sep-14 18:36
Re: About Those Two Dots.... 172 sfbey 06-Sep-14 22:29
Re: About Those Two Dots.... 209 Scott Creighton 06-Sep-14 23:58
Re: About Those Two Dots.... 201 Origyptian 07-Sep-14 00:12
Re: About Those Two Dots.... 195 Jon Ellison 07-Sep-14 01:22
Re: About Those Two Dots.... 240 Origyptian 07-Sep-14 03:52
Re: About Those Two Dots.... 209 Jon Ellison 07-Sep-14 01:38
Re: About Those Two Dots.... 236 Audrey 07-Sep-14 06:21
Re: About Those Two Dots.... 269 Martin Stower 10-Sep-14 00:22
Re: About Those Two Dots.... 202 Jon Ellison 07-Sep-14 08:09
Re: About Those Two Dots.... 218 Scott Creighton 07-Sep-14 10:48
Re: About Those Two Dots.... 172 Audrey 07-Sep-14 17:44
Re: About Those Two Dots.... 205 Scott Creighton 07-Sep-14 18:59
Re: About Those Two Dots.... 257 sfbey 07-Sep-14 19:02
Re: About Those Two Dots.... 230 Scott Creighton 07-Sep-14 22:35
Re: About Those Two Dots.... 212 sfbey 08-Sep-14 00:35
Re: About Those Two Dots.... 244 Scott Creighton 08-Sep-14 10:09
Re: About Those Two Dots.... 197 Audrey 08-Sep-14 00:44
Re: About Those Two Dots.... 227 eyeofhorus33 08-Sep-14 20:09
Re: About Those Two Dots.... 225 Origyptian 08-Sep-14 20:27
Re: About Those Two Dots.... 253 eyeofhorus33 08-Sep-14 20:33
Re: About Those Two Dots.... 185 Origyptian 08-Sep-14 21:12
Re: About Those Two Dots.... 178 eyeofhorus33 08-Sep-14 21:19
Re: About Those Two Dots.... 193 Origyptian 08-Sep-14 21:29
Re: About Those Two Dots.... 220 eyeofhorus33 08-Sep-14 21:41
Re: About Those Two Dots.... 190 Origyptian 08-Sep-14 21:52
Re: About Those Two Dots.... 150 eyeofhorus33 08-Sep-14 22:04
Re: About Those Two Dots.... 156 Origyptian 08-Sep-14 22:35
Re: About Those Two Dots.... 164 eyeofhorus33 08-Sep-14 22:42
Re: About Those Two Dots.... 202 Origyptian 08-Sep-14 22:56
Re: About Those Two Dots.... 189 Audrey 09-Sep-14 01:01
Re: About Those Two Dots.... 191 Jon Ellison 09-Sep-14 01:37
Re: About Those Two Dots.... 241 eyeofhorus33 09-Sep-14 17:54
Re: About Those Two Dots.... 140 Origyptian 09-Sep-14 18:23
Re: About Those Two Dots.... 161 eyeofhorus33 09-Sep-14 19:02
Re: About Those Two Dots.... 200 Origyptian 09-Sep-14 19:32
Re: About Those Two Dots.... 218 eyeofhorus33 09-Sep-14 20:43
Re: About Those Two Dots.... 196 Jon Ellison 09-Sep-14 20:55
Re: About Those Two Dots.... 219 Morten 09-Sep-14 21:59
Re: About Those Two Dots.... 220 Jon Ellison 09-Sep-14 22:12
Re: About Those Two Dots.... 228 Origyptian 09-Sep-14 22:36
Re: About Those Two Dots.... 197 Jon Ellison 09-Sep-14 22:42
Re: About Those Two Dots.... 174 Origyptian 09-Sep-14 22:29
Re: About Those Two Dots.... 208 Jon Ellison 09-Sep-14 22:35
Re: About Those Two Dots.... 178 Origyptian 09-Sep-14 22:48
Re: About Those Two Dots.... 194 Jon Ellison 09-Sep-14 23:04
Re: About Those Two Dots.... 211 Jon Ellison 10-Sep-14 08:45
Re: About Those Two Dots.... 196 DUNE 10-Sep-14 09:52
Re: About Those Two Dots.... 240 Jon Ellison 10-Sep-14 11:47
Re: About Those Two Dots.... 212 DUNE 10-Sep-14 13:17
Re: About Those Two Dots.... 208 Jon Ellison 10-Sep-14 13:36
Re: About Those Two Dots.... 198 DUNE 10-Sep-14 14:14
Re: About Those Two Dots.... 200 Jon Ellison 10-Sep-14 16:49
Re: About Those Two Dots.... 138 DUNE 10-Sep-14 17:26
Re: About Those Two Dots.... 196 Origyptian 10-Sep-14 18:03
Re: About Those Two Dots.... 233 Scott Creighton 10-Sep-14 18:31
Re: About Those Two Dots.... 226 Jon Ellison 10-Sep-14 18:49
Re: About Those Two Dots.... 240 Scott Creighton 10-Sep-14 18:54
Re: About Those Two Dots.... 215 Jon Ellison 10-Sep-14 19:12
Re: About Those Two Dots.... 209 Origyptian 10-Sep-14 19:52
Re: About Those Two Dots.... 208 Jon Ellison 10-Sep-14 19:35
Re: About Those Two Dots.... 204 Origyptian 10-Sep-14 19:37
Re: About Those Two Dots.... 234 DUNE 10-Sep-14 19:54
Re: About Those Two Dots.... 230 Origyptian 10-Sep-14 20:06
Re: About Those Two Dots.... 250 Origyptian 10-Sep-14 19:34
Re: About Those Two Dots.... 234 Origyptian 10-Sep-14 15:57
Re: About Those Two Dots.... 203 DUNE 10-Sep-14 16:39
could be a result of overprocessing the image 206 Skatha 10-Sep-14 17:35
Re: could be a result of overprocessing the image 197 Jon Ellison 10-Sep-14 17:40
Re: About Those Two Dots.... 220 Origyptian 09-Sep-14 22:26
Re: About Those Two Dots.... 206 Morten 08-Sep-14 23:03
Re: About Those Two Dots.... 208 Origyptian 08-Sep-14 23:05
Re: About Those Two Dots.... 210 Morten 08-Sep-14 23:11
Re: About Those Two Dots.... 195 eyeofhorus33 08-Sep-14 23:15
Re: About Those Two Dots.... 272 sfbey 08-Sep-14 23:18
Re: About Those Two Dots.... 191 Origyptian 09-Sep-14 00:03
Re: About Those Two Dots.... 213 Jon Ellison 09-Sep-14 00:30
Re: About Those Two Dots.... 241 Origyptian 09-Sep-14 00:03
Re: About Those Two Dots.... 221 Origyptian 09-Sep-14 00:01
Re: About Those Two Dots.... 205 eyeofhorus33 08-Sep-14 23:13
Re: About Those Two Dots.... 183 Audrey 09-Sep-14 00:52
Re: About Those Two Dots.... 220 Origyptian 09-Sep-14 05:50
Re: About Those Two Dots.... 200 Origyptian 08-Sep-14 21:15
Re: About Those Two Dots.... 236 sfbey 08-Sep-14 21:23
Re: About Those Two Dots.... 234 eyeofhorus33 08-Sep-14 21:26
Re: About Those Two Dots.... 210 Origyptian 08-Sep-14 21:30
Re: About Those Two Dots.... 204 eyeofhorus33 08-Sep-14 21:47
Re: About Those Two Dots.... 221 Origyptian 08-Sep-14 22:06
Re: About Those Two Dots.... 210 eyeofhorus33 08-Sep-14 22:21
Re: About Those Two Dots.... 239 Origyptian 08-Sep-14 22:44
Re: About Those Two Dots.... 174 sfbey 08-Sep-14 22:04
Re: About Those Two Dots.... 193 Audrey 08-Sep-14 21:59
Re: About Those Two Dots.... 215 sfbey 08-Sep-14 22:11
Re: About Those Two Dots.... 123 eyeofhorus33 08-Sep-14 21:25
Re: About Those Two Dots.... 180 Audrey 08-Sep-14 21:24
Re: About Those Two Dots.... 203 eyeofhorus33 08-Sep-14 21:28
Re: About Those Two Dots.... 192 Audrey 08-Sep-14 22:02
Re: About Those Two Dots.... 160 eyeofhorus33 08-Sep-14 22:13
Re: About Those Two Dots.... 148 Origyptian 08-Sep-14 22:40
Re: About Those Two Dots.... 157 Thanos5150 11-Sep-14 05:11
Re: About Those Two Dots.... 171 Origyptian 11-Sep-14 13:51
Re: About Those Two Dots.... 192 Thanos5150 11-Sep-14 16:47
Re: About Those Two Dots.... 187 Origyptian 11-Sep-14 20:27
Re: About Those Two Dots.... 284 Thanos5150 11-Sep-14 21:28
Re: About Those Two Dots.... 195 Origyptian 11-Sep-14 22:46
Re: About Those Two Dots.... 216 Jon Ellison 11-Sep-14 22:55
Re: About Those Two Dots.... 170 Origyptian 11-Sep-14 23:34
Re: About Those Two Dots.... 207 Jon Ellison 11-Sep-14 23:54
Re: About Those Two Dots.... 182 Origyptian 12-Sep-14 00:07
Re: About Those Two Dots.... 188 Jon Ellison 12-Sep-14 00:17
Re: About Those Two Dots.... 192 Origyptian 12-Sep-14 00:27
Re: About Those Two Dots.... 204 Jon Ellison 12-Sep-14 00:39
Re: About Those Two Dots.... 209 Origyptian 12-Sep-14 01:12
Re: About Those Two Dots.... 181 Jon Ellison 12-Sep-14 06:26
Re: About Those Two Dots.... 190 Origyptian 12-Sep-14 15:49
Re: About Those Two Dots.... 192 Jon Ellison 12-Sep-14 07:22
Re: About Those Two Dots.... 165 Origyptian 12-Sep-14 15:58
Re: About Those Two Dots.... 142 DUNE 12-Sep-14 16:07
Re: About Those Two Dots.... 182 Jon Ellison 12-Sep-14 16:13
Re: About Those Two Dots.... 185 Jon Ellison 12-Sep-14 16:19
Re: About Those Two Dots.... 104 Origyptian 12-Sep-14 16:48
Re: About Those Two Dots.... 215 DUNE 12-Sep-14 17:07
Re: About Those Two Dots.... 205 DUNE 12-Sep-14 17:45
Re: About Those Two Dots.... 205 Origyptian 12-Sep-14 18:01
Re: About Those Two Dots.... 179 DUNE 12-Sep-14 18:16
Re: About Those Two Dots.... 201 Jon Ellison 12-Sep-14 18:25
Re: About Those Two Dots.... 201 Origyptian 12-Sep-14 18:53
Re: About Those Two Dots.... 257 Jon Ellison 12-Sep-14 19:15
Re: About Those Two Dots.... 197 Origyptian 12-Sep-14 19:58
Re: About Those Two Dots.... 177 Jon Ellison 12-Sep-14 20:27
Re: About Those Two Dots.... 212 Origyptian 12-Sep-14 20:58
Re: About Those Two Dots.... 200 Origyptian 12-Sep-14 16:35
Re: About Those Two Dots.... 197 Jon Ellison 12-Sep-14 18:05
Re: About Those Two Dots.... 222 Thanos5150 11-Sep-14 23:59
Re: About Those Two Dots.... 184 Origyptian 12-Sep-14 00:16
Re: About Those Two Dots.... 176 Thanos5150 12-Sep-14 00:27
Re: About Those Two Dots.... 175 Origyptian 12-Sep-14 00:31
Re: About Those Two Dots.... 222 Audrey 09-Sep-14 02:04
Re: About Those Two Dots.... 181 Jon Ellison 09-Sep-14 10:56
Re: About Those Two Dots.... 186 Origyptian 08-Sep-14 22:13
Re: About Those Two Dots.... 214 Jon Ellison 07-Sep-14 11:53
Re: About Those Two Dots.... 181 Origyptian 07-Sep-14 17:21
Re: About Those Two Dots.... 232 Jon Ellison 07-Sep-14 18:15
Re: About Those Two Dots.... 162 Origyptian 07-Sep-14 18:24
Re: About Those Two Dots.... 193 Jon Ellison 07-Sep-14 18:27
Re: About Those Two Dots.... 221 Jon Ellison 07-Sep-14 18:52
Re: About Those Two Dots.... 200 Origyptian 07-Sep-14 19:08
Re: About Those Two Dots.... 160 Jon Ellison 07-Sep-14 19:12
Re: About Those Two Dots.... 192 DScribr 07-Sep-14 22:10
Re: About Those Two Dots.... 208 Origyptian 07-Sep-14 22:53
Could you link to some? 205 Skatha 08-Sep-14 06:17
Re: About Those Two Dots.... 195 DScribr 08-Sep-14 08:41
Re: About Those Two Dots.... 216 Jon Ellison 08-Sep-14 09:26
Re: About Those Two Dots.... 162 Origyptian 08-Sep-14 15:00
Re: About Those Two Dots.... 188 DScribr 08-Sep-14 15:13
Re: About Those Two Dots.... 249 Jon Ellison 08-Sep-14 15:45
Re: About Those Two Dots.... 169 DScribr 08-Sep-14 15:58
Re: About Those Two Dots.... 149 Jon Ellison 08-Sep-14 16:11
Re: About Those Two Dots.... 90 Origyptian 08-Sep-14 16:19
Re: About Those Two Dots.... 182 Audrey 08-Sep-14 21:15
Re: About Those Two Dots.... 191 Martin Stower 10-Sep-14 00:27
Re: About Those Two Dots.... 208 Scott Creighton 10-Sep-14 10:19
...Vyse is showing THREE dots... 195 Skatha 10-Sep-14 15:31
Re: ...Vyse is showing THREE dots... 178 Origyptian 10-Sep-14 15:39
Re: ...Vyse is showing THREE dots... 245 Scott Creighton 10-Sep-14 15:55
Re: ...Vyse is showing THREE dots... 176 Skatha 10-Sep-14 17:33
Re: ...Vyse is showing THREE dots... 191 Scott Creighton 10-Sep-14 18:09
Re: ...Vyse is showing THREE dots... 164 Skatha 10-Sep-14 23:54
Re: ...Vyse is showing THREE dots... 205 Scott Creighton 11-Sep-14 08:49
Re: ...Vyse is showing THREE dots... 173 Skatha 11-Sep-14 15:06


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