LR32 for multiple drawer slides.

Eoghan Brown

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Jul 1, 2011
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Forgive me if this has been covered. But I am working on a cabinet project with many drawer slides of varying heights. Using the LR32 is it possible to configure the lr32 to run three columns of holes 47mm from either side and one in the middle. Thus allowing adjustability when installing drawer slides?
 
Yes, if you are careful with your measurements this works very well.

I have build several pull out pantry type units this way.

Daniel
 
Hi,

the 47mm from either side is not a problem, since the "rulers" have length of 300mm. To drill the holes in the middle you have to adjust the "holy rail" manually. Here is a video from a German blog



The comments in the video translated:

1. Mark position of column
2. Position router according to marking
3. Mount parallel guides on the back of the (holy) rail
4. ... and adjust on the edged
5. This is how longer distances can be set
6. Drilling of holes as usual

-Mark
 
If I understand your question, it should be very capable of doing that.  The LR32 system with a holey rail allows you to route holes 32mm on center and line the rail up parallel to an edge.  I forget what the adjustment range is, but you can route those holes on the edge to about 100mm (maybe 110 or 120, I forget) from that edge.  Doing the holes 47mm from the front and back should be quite easy.

To get the holes in the middle, it depend how wide the panels are.  If they are around 200-250mm wide, it might be easy if you max out the side stops.  Wider than that and you can use a square or the parallel guides to put the column of holes in the middle.  I've used the Seneca Woodworking parallel guides to route out the middle holes for drawer glides.  With the LR32 side stops holding the rail in the correct position from the front edge (37mm in my case), I slip the parallel guides on the back of the rail and snug the stops against the back of the panel.  Once I bore all the front holes, I put a 224mm piece of scrap on the back of the panel and move the parallel guides so they're now stopped against the scrap.  I then bore a column of holes 224mm back from the first column.  My Blum slides have 224mm spacing between the mounting holes, but you can cut the scrap so it's whatever size you need.

 
I haven't tried this, but if the middle holes are too far from the edge to use the LR32 "ruler", couldn't you use the guide rail parallel guides? Once dialed in, repeatability on other panels would be easy and wouldn't require measuring/squaring.

Again, I haven't tried this, but thinking out loud.

Richard
 
Eoghan Brown said:
Forgive me if this has been covered. But I am working on a cabinet project with many drawer slides of varying heights. Using the LR32 is it possible to configure the lr32 to run three columns of holes 47mm from either side and one in the middle. Thus allowing adjustability when installing drawer slides?

With such a wide selection of drawer slides and drawer boxes, the design of cabinets has grown increasingly complicated. Consequently once the general layout of the entire cabinet project has been made, it is vital to select the actual make and model of drawer slides and the specific drawer boxes. Even if you want to build your own drawer boxes, it is best to make their dimensions the same as commercial drawer boxes from vendors.

Only occasionally is a middle column of holes needed to support drawer slides. Most side mount slides are designed to use the typical front and back hole columns.

Double check the specs, because not all makes and models use the 47mm in-set from the front. Only if the cabinet design follows System 32 standards with many brands will the rear off-set be 47mm. Bottom line is you need to read and understand the specs.

My firm specializes in wholesale production of high-quality custom cabinets mostly for installation on the Westside of Los Angeles County, California. Because these cabinets are custom designed and made for very specific homeowners, often they cannot be made using actual System 32 standards, which I have been teaching since 1950.

Normally if the only holes being made in a cabinet side we do that with holy rails and OF1010. We own several CNC nested routers of various sizes, but usually that approach is over-kill. One time we do use the CNC for such parts is pantry cabinets. The new thing is sliding shelves, which still need to adjust similarly to ordinary shelves. Those sliding shelves are similar to a minimum height drawer and rarely have an attached decorative front. The loading on these sliding shelves can be substantial so they tend to need a middle hole column, but that is not always on the literal middle of the space between the front and rear hole columns. We can do this with Holy rails, but trust me, it is so much more productive to task the CNC machines.
 
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