Touch plates for Z Axis

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Forum topic by Grant Davis posted 08-30-2018 06:22 PM 816 views 0 times favorited 2 replies Add to Favorites Watch
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Grant Davis

837 posts in 4790 days

08-30-2018 06:22 PM

Hi everyone, I am in the process of putting together my GarageworX CNC and am exploring the available touch plates on the market. Would any of you knowledgeable guys like to share your brand of touch plate with likes and dislikes?

Thanks in advance.

-- Grant...."GO BUCKEYES"

2 replies so far

View oldnovice's profile


7667 posts in 4250 days

#1 posted 09-10-2018 04:48 AM

My Shopbot has a .125” piece of aluminum for a touch plate. Under a command from the console and the touch plate under the bit, the Z axis moves down to touch the plate then backs up and slowly touches the plate again. The software knows the touch plate thickness and after this operation it knows where Z zero is.

There are really many variations of this scheme but this one is probably the easiest to impliment and least costly.

There is one box with a plunger that the bit touches and the plunger moves down, I believe to break a contact, then the bit retracts and repeats. The plunger is very lightly spring loaded but the same principle as my Shopbot zero plate, just more expensive, in my opinion!

Other lessential elegant is moving the Z axis down on a piece of paper until the paper can’t be moved.

Check out YouTube videos by Gary Campbell or others that use many different Z zeroing methods.
Try searching YouTube ”Z axis zeroing” and you will see many alternatives.

-- "It's fine in practise but it will never work in theory"

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Grant Davis

837 posts in 4790 days

#2 posted 09-10-2018 11:06 AM

Thanks oldnovice

-- Grant...."GO BUCKEYES"

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