keninar
01-30-2011, 04:41 PM
G’day, All:
New carver here – with a question on the mechanics regarding how the CW measures board length – when using a sled.
In the effort of clarity, allow me to state my query, and then follow with the background.
Query: “How does the CW measure board length, i.e. where is the sensor located?”
(And the real question: Given the info presented herein - What am I missing??!!)
I have constructed two sleds prior – with significant help from these forums –Thank You – with great success. Carvings proceeded without a hitch once I became educated to the finer points of masking tape application.
So I decided to try a test carving on a smaller piece of cherry, one that would require the manufacture of a sled to “keep it under the rollers.” Constructed said sled, as constructed before, and thought I was all set. I then took SWMBO to the shop, to witness how well “her” Christmas present was performing.
Loaded the sled, selected the project and the CW began its homing and measuring routines. I selected “stay under the rollers” and after the obligatory measuring runs, the CW display indicated a board length of 11.30”/18.25; then asking if I wanted to scale the project. Realize scaling is a no-no, but could not reconcile the difference in length. (Actual sled length is 18.25”, CW was reading only 11.3”. Have not had a problem with calibration – machine measurements have been spot-on with real-world measurements.)
I aborted the project, removed the sled and examined it for something that could “fool” the CW at or about the 11.30 mark. Nothing was apparent to the un-trained eye (although I confess limited knowledge on exactly what to look for. I added tape in the center (left to right) of the sled and retried. Same result. At this point, SWMBO rolled her eyes and retreated back to the house.
While she is quite versed in telling me what I’ve done wrong (and she is usually right!) she could offer no input here. So I am throwing myself at the mercy of the court – and pleading my case with those who are “educated in such things.”
I have attached 2 photos: 1) sled front with approximate measurements; 2) sled back; to assist in the description of my challenge.
Any thoughts?
New carver here – with a question on the mechanics regarding how the CW measures board length – when using a sled.
In the effort of clarity, allow me to state my query, and then follow with the background.
Query: “How does the CW measure board length, i.e. where is the sensor located?”
(And the real question: Given the info presented herein - What am I missing??!!)
I have constructed two sleds prior – with significant help from these forums –Thank You – with great success. Carvings proceeded without a hitch once I became educated to the finer points of masking tape application.
So I decided to try a test carving on a smaller piece of cherry, one that would require the manufacture of a sled to “keep it under the rollers.” Constructed said sled, as constructed before, and thought I was all set. I then took SWMBO to the shop, to witness how well “her” Christmas present was performing.
Loaded the sled, selected the project and the CW began its homing and measuring routines. I selected “stay under the rollers” and after the obligatory measuring runs, the CW display indicated a board length of 11.30”/18.25; then asking if I wanted to scale the project. Realize scaling is a no-no, but could not reconcile the difference in length. (Actual sled length is 18.25”, CW was reading only 11.3”. Have not had a problem with calibration – machine measurements have been spot-on with real-world measurements.)
I aborted the project, removed the sled and examined it for something that could “fool” the CW at or about the 11.30 mark. Nothing was apparent to the un-trained eye (although I confess limited knowledge on exactly what to look for. I added tape in the center (left to right) of the sled and retried. Same result. At this point, SWMBO rolled her eyes and retreated back to the house.
While she is quite versed in telling me what I’ve done wrong (and she is usually right!) she could offer no input here. So I am throwing myself at the mercy of the court – and pleading my case with those who are “educated in such things.”
I have attached 2 photos: 1) sled front with approximate measurements; 2) sled back; to assist in the description of my challenge.
Any thoughts?