Author Topic: Planer Accurate Depth of Cut  (Read 364 times)

Offline velocette

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Planer Accurate Depth of Cut
« on: November 28, 2017, 09:05:22 PM »
Hi all Wood Nuts
Recently I bought a 150 mm wide planer in rough condition and spent a lot of time and a little money on a rebuild to use on my woodworking.
Once complete I figured that if I fixed a DTI to the In feed Table Gibs  then every 5 mm on the DTI  = 3 mm depth of cut.

Eric


Offline Spurry

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Re: Planer Accurate Depth of Cut
« Reply #1 on: November 29, 2017, 05:15:10 AM »
That's a very cunning solution to feed depth.  :thumbup: Do the vibes from the machine not affect the DTI when in actual operation?
Pete

Offline velocette

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Re: Planer Accurate Depth of Cut
« Reply #2 on: November 29, 2017, 12:52:35 PM »
That's a very cunning solution to feed depth.  :thumbup: Do the vibes from the machine not affect the DTI when in actual operation?
Pete
Hi Pete
Nothing detected so far with a heavy cast iron frame of around 30 - 40 Kgs. I lock the gibs and then take up the backlash on the adjustment to hold the table up.
The drive is with Poly Vee Belt 6 Ribs giving a very smooth drive. I do confess to being a Poly Vee Belt Drive addict with all bar one workshop machines with them fitted. :doh:
Eric

Offline Spurry

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Re: Planer Accurate Depth of Cut
« Reply #3 on: November 29, 2017, 06:06:39 PM »
Thanks for answering the query Eric.
Hope it continues to work well for you, so happy planing.
Pete

Offline ZebraDriver

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Re: Planer Accurate Depth of Cut
« Reply #4 on: November 30, 2017, 01:58:14 PM »
Eric. Nice set up, a couple of wee comments for you to consider:-

 If you mount the DTI vertically with the reader tip running against a horizontal block the reading will be direct rather than your 5mm for each 3mm Also I see you seem have two DTIs fitted, the outfeed table should be fixed at the height of the blades, if you don't have it set at blade height you will start planning curves.

Martin
When you stop and think about it, treadmills are dangerous things!

Offline velocette

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Re: Planer Accurate Depth of Cut
« Reply #5 on: December 02, 2017, 01:59:24 AM »
Eric. Nice set up, a couple of wee comments for you to consider:-

 If you mount the DTI vertically with the reader tip running against a horizontal block the reading will be direct rather than your 5mm for each 3mm Also I see you seem have two DTIs fitted, the outfeed table should be fixed at the height of the blades, if you don't have it set at blade height you will start planning curves.

Martin

Fair comment Martin Yes  Two DTI's fitted However I posted pictures of Two different machines and failed to make comment. Look closer and one is mounted on a Black Frame the other on a Grey Frame.
To read directly the anvil for the DTI MUST  be parallel to the in feed table and have a polished surface
The Blades to the  out feed table is set up with a special jig to Plus or minus 0.05 mm of the blades at TDC so planing curves is NOT a problem.
The black frame was a recondition job and on sold the grey one is bolted to the side of my saw bench

Eric