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Table extensions on AD 741. A warning

 

For the first time I decided to use the cast Iron table extension that is usually attached to my shaper spindle moulder to my planer jointer out feed. ?I was planing some 10¡¯ x 10¡± x 1 1/4 and thought I might benefit from extending the surface to help achieve a flatter, truer board. ?I set the extension up to be perfectly level with the out feed table.?

so far so good and the added surface helped support at the end of the cut. I think I probably always use the end of the outfeed table to pivot longer boards or use it as a point to rotate the board onto its side ready to carry it back for another pass. ?I didn¡¯t deliberately do this on the extension- more so that I didn¡¯t lever it out of level relative to the out feed surface. ?

Next day surface planing up some smaller boards I noticed something was amiss. ?First thing was the stock hitting the out feed just after the cutter on fence side. ?I could pass a board over cutter at the front of the machine but it was taking more from one side than other. ?I presume the out feed has moved and I would imagine this is due to the extra leverage of the extension.?

The table sits comfortably on the cathedral bolts at the front and they aren¡¯t loose ( as in neither have loosened or undone). ?

The out feed tips away from the cutter head by 0.80 mm with the in feed and out feed tables married up at the cutter head.
?
Fistly, am I missing something obvious? ?I am really hoping not to have to ?recalibrate the tables. ?I don¡¯t have any of the specialist dials / gauges etc. A while ago I tried to set up a Hammer planer / Thicknesser that a colleague had attempted to adjust. After many hours I failed and had to call in Felder Techs - ???????$$$$$. ?

Any input welcomed.?
 

 

Did you try opening and closing the outfeed table to see if the drop still persists? If you moved the outfeed vertically to be even with the cutter head, did you do it in the up only direction? You don't ever want to come down to a point with the jointer tables, always take the slack going up. Just a couple of thoughts....

Brian Lamb
blamb11@...
lambtoolworks.com


On Saturday, July 20, 2024 at 05:19:40 AM MST, petertheeater24 via groups.io <petertheeater24@...> wrote:


For the first time I decided to use the cast Iron table extension that is usually attached to my shaper spindle moulder to my planer jointer out feed. ?I was planing some 10¡¯ x 10¡± x 1 1/4 and thought I might benefit from extending the surface to help achieve a flatter, truer board. ?I set the extension up to be perfectly level with the out feed table.?

so far so good and the added surface helped support at the end of the cut. I think I probably always use the end of the outfeed table to pivot longer boards or use it as a point to rotate the board onto its side ready to carry it back for another pass. ?I didn¡¯t deliberately do this on the extension- more so that I didn¡¯t lever it out of level relative to the out feed surface. ?

Next day surface planing up some smaller boards I noticed something was amiss. ?First thing was the stock hitting the out feed just after the cutter on fence side. ?I could pass a board over cutter at the front of the machine but it was taking more from one side than other. ?I presume the out feed has moved and I would imagine this is due to the extra leverage of the extension.?

The table sits comfortably on the cathedral bolts at the front and they aren¡¯t loose ( as in neither have loosened or undone). ?

The out feed tips away from the cutter head by 0.80 mm with the in feed and out feed tables married up at the cutter head.
?
Fistly, am I missing something obvious? ?I am really hoping not to have to ?recalibrate the tables. ?I don¡¯t have any of the specialist dials / gauges etc. A while ago I tried to set up a Hammer planer / Thicknesser that a colleague had attempted to adjust. After many hours I failed and had to call in Felder Techs - ???????$$$$$. ?

Any input welcomed.?
 

Opening and closing has not rectified the situation.
I¡¯m not sure what you mean by ¡°moving the out feed vertically¡±
?
 
Edited

Hi Peter,
?
I use both, cast iron and AL ext tables, on the infeed and outfeed of Dual51. It is hard for me to believe that they can move the tables on a well adjusted machine. Tables, when locked, do not budge other than a few thousands that you can only see on a needle gauge.
?
For grins have you tried another piece of wood that is relatively flat and void of knots?
?
You described the 0.8mm dip on the far end of the outfeed but did not say if the outfeed is coplaner with the infeed from front operator end) to back (fence) at the cutterhead. Can you share this detail?
?
The only thing I can suggest, assuming your outfeed was set perfectly, is to place your straight edge as you described where you can see the 0.8mm dip on the end of the outfeed. Now gently try to lift the outfeed (in-line with the weight of the ext table, I know not easy but giving an idea) and see if you can reduce or eliminate the 0.8 mm gap. If so then you need an adjustment.

Imran Malik

On Jul 20, 2024, at 8:19?AM, petertheeater24 via groups.io <petertheeater24@...> wrote:

For the first time I decided to use the cast Iron table extension that is usually attached to my shaper spindle moulder to my planer jointer out feed. ?I was planing some 10¡¯ x 10¡± x 1 1/4 and thought I might benefit from extending the surface to help achieve a flatter, truer board. ?I set the extension up to be perfectly level with the out feed table.?

so far so good and the added surface helped support at the end of the cut. I think I probably always use the end of the outfeed table to pivot longer boards or use it as a point to rotate the board onto its side ready to carry it back for another pass. ?I didn¡¯t deliberately do this on the extension- more so that I didn¡¯t lever it out of level relative to the out feed surface. ?

Next day surface planing up some smaller boards I noticed something was amiss. ?First thing was the stock hitting the out feed just after the cutter on fence side. ?I could pass a board over cutter at the front of the machine but it was taking more from one side than other. ?I presume the out feed has moved and I would imagine this is due to the extra leverage of the extension.?

The table sits comfortably on the cathedral bolts at the front and they aren¡¯t loose ( as in neither have loosened or undone). ?

The out feed tips away from the cutter head by 0.80 mm with the in feed and out feed tables married up at the cutter head.
?
Fistly, am I missing something obvious? ?I am really hoping not to have to ?recalibrate the tables. ?I don¡¯t have any of the specialist dials / gauges etc. A while ago I tried to set up a Hammer planer / Thicknesser that a colleague had attempted to adjust. After many hours I failed and had to call in Felder Techs - ???????$$$$$. ?

Any input welcomed.?
 

If you have adjusted the height of the outfeed table with respect to the cutterhead, then you want to make sure that you arrive at your height by raising the table using the lever on the outfeed side, not going lower to match the cutting circle.

Imran, if you looked at his pictures, you can see that a level place on the infeed table has a gap on the outfeed table, clearly showing that his tables are not coplanar. How or why they moved, I can't say, but they shouldn't if properly tightened.

Brian Lamb
blamb11@...
lambtoolworks.com


On Sunday, July 21, 2024 at 04:21:19 AM MST, petertheeater24 via groups.io <petertheeater24@...> wrote:


Opening and closing has not rectified the situation.
I¡¯m not sure what you mean by ¡°moving the out feed vertically¡±
?
 

¿ªÔÆÌåÓý

Hi Brian,

Picture matches his description but he also said that he is getting a deeper cut on operator side vs the fence side. Therefore, it is useful to know if the outfeed is co-planer front to back (as opposed to in the direction of travel, which it is not).

Imran Malik

On Jul 21, 2024, at 10:48?AM, Brian Lamb via groups.io <blamb11@...> wrote:

?
If you have adjusted the height of the outfeed table with respect to the cutterhead, then you want to make sure that you arrive at your height by raising the table using the lever on the outfeed side, not going lower to match the cutting circle.

Imran, if you looked at his pictures, you can see that a level place on the infeed table has a gap on the outfeed table, clearly showing that his tables are not coplanar. How or why they moved, I can't say, but they shouldn't if properly tightened.

Brian Lamb
blamb11@...
lambtoolworks.com


On Sunday, July 21, 2024 at 04:21:19 AM MST, petertheeater24 via groups.io <petertheeater24@...> wrote:


Opening and closing has not rectified the situation.
I¡¯m not sure what you mean by ¡°moving the out feed vertically¡±
?
 

I have a similar problem with my AD951 (2008 vintage) purchased used and shipped from Florida to northern CA via LTL freight. ?When it first occurred after I got it installed and powered up, I thought I had purchased someone¡¯s lemon, or it had been moved out of alignment during shipping. ?I started down the rabbit hole of making adjustments when I discovered the locking cam on the outfield side of the table had come loose after startup, allowing the outfield table to lift so slightly one cannot see it, but it shows in the jointing of the piece. ?A quick twist to lock it down a second time always fixes the issue until I next change it to planer and back to jointer. ?It¡¯s an idiosyncrasy with this machine to which I have become accustomed.
?
Since I don¡¯t know if this is a common issue with this design, I suggest checking to be certain both the table locks are tight.
?
Best of luck,
?
Alex B.

On Jul 20, 2024, at 7:47?AM, Brian Lamb <blamb11@...> wrote:
Did you try opening and closing the outfeed table to see if the drop still persists? If you moved the outfeed vertically to be even with the cutter head, did you do it in the up only direction? You don't ever want to come down to a point with the jointer tables, always take the slack going up. Just a couple of thoughts....
?
Brian Lamb
blamb11@...
lambtoolworks.com
?
?
On Saturday, July 20, 2024 at 05:19:40 AM MST, petertheeater24 via groups.io <petertheeater24@...> wrote:
?
?
For the first time I decided to use the cast Iron table extension that is usually attached to my shaper spindle moulder to my planer jointer out feed. ?I was planing some 10¡¯ x 10¡± x 1 1/4 and thought I might benefit from extending the surface to help achieve a flatter, truer board. ?I set the extension up to be perfectly level with the out feed table.?

so far so good and the added surface helped support at the end of the cut. I think I probably always use the end of the outfeed table to pivot longer boards or use it as a point to rotate the board onto its side ready to carry it back for another pass. ?I didn¡¯t deliberately do this on the extension- more so that I didn¡¯t lever it out of level relative to the out feed surface. ?

Next day surface planing up some smaller boards I noticed something was amiss. ?First thing was the stock hitting the out feed just after the cutter on fence side. ?I could pass a board over cutter at the front of the machine but it was taking more from one side than other. ?I presume the out feed has moved and I would imagine this is due to the extra leverage of the extension.?

The table sits comfortably on the cathedral bolts at the front and they aren¡¯t loose ( as in neither have loosened or undone). ?

The out feed tips away from the cutter head by 0.80 mm with the in feed and out feed tables married up at the cutter head.
?
Fistly, am I missing something obvious? ?I am really hoping not to have to ?recalibrate the tables. ?I don¡¯t have any of the specialist dials / gauges etc. A while ago I tried to set up a Hammer planer / Thicknesser that a colleague had attempted to adjust. After many hours I failed and had to call in Felder Techs - ???????$$$$$. ?

Any input welcomed.?

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