I have been using gSender for a little while and I really like it. One thing I require for the work I do is a heightmapping routine. I see it on the gSender interface but I donāt know how to implement it. Is this a future addition?
Jim
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Yes, itās a feature in-progress while we continue through development of gSender 
So far we put it up since we saw itās a feature that many other senders tend to incorporate, I think youāre the first to formally request the feature for gSender though. I suppose Iāll have to see where it ends up on the to-do list, as of now weāre working away at some other more highly requested features and further increasing gSender stability on lower-powered hardware and when running larger jobs 
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Hiā¦is it on your agenda to implement auto-leveling in the next versions? tks
Are there any plans to program Surface Mapping into gSender?
I want to use it when machining Circuit Boards.
I currently use Candle to do it but it would be great if I could use gSender to do it.
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Itās something we have in the backlog but isnāt high priority at the moment.
Thanks for the quick reply.
Guess Iāll just keep using Candle for circuit boards.
Can someone explain what surface mapping is for me? Iām not familiar with this term.
On printed circuit boards, the copper layer is about 0.05 mm thick and you etch with the tool about 0.1mm deep so any small irregularities in the height of the board can lead to a poor circuit board trace.
When you map, you use the Z probe to actually measure the difference in height, from 0 , across the board at say 16 spots on a board say 80mm x 80mm.
This map is then taken into account by the gcode as the board is etched and the Z depth of etch adjusted accordingly.
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Iād like this feature, except I would want to use fibreglass boards, rather than phenolic, and fibreglass destroys bits fast. My circuits are not simple ones. I did try using gSender to do the holes on a photo etched boards, but distances between points from the laser printer that did the transparencies was non-linear and could not be compensated for.
This video shows āsurface mappingā, āauto levelingā or whatever else itās sometimes called to carve a logo onto a mouse.
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thank you again. We can do this with our Longmill?
Do you know if Vectric carve has this feature?
Vectric Aspire has a āMap to 3D Surfaceā function but not sure if itās the same?
Donāt think Iāve ever seen the āMap to 3D Surfaceā but I only have VCarve Desktop.
VCarve has āProject Toolpath onto 3D Modelā. It will make the toolpath conform to the contours of the 3D Model that is selected with the toolpath. So it can achieve similar results to surface mapping, the only problem is that you need an stl file that models the surface you want to carve onto. To continue with the mouse example you would need an accurate stl file of the mouse. If you donāt have one modeling surfaces with compound curves can be rather hard IMHO.
You can do this with your LongMill just not using gSender. CNCJS has an extension that can do it. Found a video about installation and usage here. Bear in mind I have no experience in actually doing it myself.
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As far as printed circuit boards, Candle does it spot on. Just ran off a circuit board this morning.
Circuit boards is the only time I use surface mapping so I can only relate to that.
thank you sir, I believe I may be off on the pursuit of another idea 
Boy how things have come a long way. I remember making circutboards with markers. 
CNCs are only really good for larger pads and wider tracks. Anything smaller and the photo resist etc.methods are the way to go
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Hello!
Will there be a surface scanning feature in a future version of gSender? it would be really neat! Estlcam has achieved this since 7+ years ago: https://www.youtube.com/watch?v=ApBfHW7AhsM, it would be nice for gSender to have something similar, the carving and etching possibilities would expand a lot with this!
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Itās in the backlog but not high priority for the time being.
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Hi,
Just wanted to inquire if there was any update on the progress for adding this to Gsender 
Was it added and I havenāt been able to find it?
I have been using Gsender with my longmill and I love it, however I would like to see the height mapping feature for some more precision work. Would be awesome to also connect my smaller cnc for PCB making and such.
Thanks for the great software,
Cheers