Jessem Mast-R-Lift with Rockler Digital Master

527 Views 5 Replies 2 Participants Last post by reuelt, 6 mo ago

Birchy

Discussion Starter · 6 mo ago

I purchased a used router table which came with a Mast-R-Lift and a Rockler Digital Master height gauge, and I can't find any documentation on the Rockler device. It seems to work but there's a probe type attachment that I can't figure out what it's for, although I assume it's for zeroing - see attached picture
Thanks
John

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reuelt

· #2 · 6 mo ago

Rockler Digital Master

Essentially, the sensor attached to a sleeve fits over the router's height adjustment shaft. As you lower or raise the router the shaft rotates and turns the sensor. The system keeps track of how many turns and knowing the TPI of the screw converts number of turns to height.

By zeroing when the bit top is level to the table, you can set the bit height (depth of cut) precisely.

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Birchy

Discussion Starter · #3 · 6 mo ago

Thanks but there is already a rotary encoder mounted on the lift, which is providing lift height movement information - see pic below. There is a cable that links the encoder with the Digital Master

Wood Gas Engineering Machine Machine tool

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reuelt

· #4 · 6 mo ago

Then
I guess the "spare" probe may be used for measuring the router's RPM?

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Birchy

Discussion Starter · #5 · 6 mo ago

reuelt said:
Then
I guess the "spare" probe may be used for measuring the router's RPM?

Maybe?? I couldn't seem to make it do anything

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reuelt

· #6 · 6 mo ago

Birchy said:
Maybe?? I couldn't seem to make it do anything

Usually you need to put a reflector strip (e.g aluminium foil or white paint) somewhere on the spindle to create a pulse when the probe shines shines at it. That will measure the RPM.

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