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Process 32

Blum's Process 32 makes very little use of the 32mm system. The only aspect that is fully 32mm system is that the cabinet box and door/drawer face heights are in 32mm increments and the faces register to system holes. While system rows are a multiple of 32mm apart, box depths are not in 32mm increments. Here, and elsewhere, Blum has opted for American dimensions, e.g. 12 and 24" deep boxes. While drawer slides are mounted to system holes, only the Meta and Tandem box drawer sides are in increments of 32mm tall and only their bottom mount drawer boxes register to the faces consistently.
Process 32Box dimensions for kitchen cabinets are on page one. They are your typical American 30-1/2" box (wall and base) plus 4" toe and 1-1/2" counter (36" total). Cabinet depths are also sized to American standards, e.g. 24 and 12" deep. Those American dimensions have a cost, especially if you drill system rows with anything less than a double row boring machine. The difference between using the 32mm increments and American dimensions is 17mm, or approximately 5/8".

While Blum is heavy on American stantards, I should note that Blum is not alone when it comes to non incremental box depths. This should be discussed in more detail, but the key factor is making the best use of 4x8' sheets. Using applied (instead of dadoed) backs can help when using 32mm increments.

Process 32Rail spacing is covered on page two. For some strange reason, only the rails at 606.5mm are centered between system holes. The other rails vary from 1-3mm off center. The 32mm way to handle cross rails is to center them between (or on, whichever is appropriate) system holes, i.e. n x 32mm apart. Because all slides mount to system holes (are the same distance from centered rails), there is no reason not to center the rails. The "Cross rail positions" dimensions are also rather pointless, center to center dimensions is all that matters - and it works with any thickness of stock.


Process 32Page five has one of their Metabox layouts. The distances from the top of the drawer face to the first mounting hole are missing. That measurement, for all but the bottom left drawer, is 55mm. Using a 320K instead of the 320M and adding another gallery rail would allow you to drill all the faces 55mm from the top. The same is true for system hole registered faces (Blum uses shifted registration) using a Plus 32 layout. Here both drawers can be 320M's and and the distance from the top of the face is 71mm for all the drawers. Note: 71-55=16mm, the same distance as the system row holes are different (start holes and system VS shifted face registration). While indexing drawer faces from the bottom is common, indexing from the top can provide more options (its the only way Metabox indexing can be consistent). You do have to use the system, Blum's 2" increment wood drawer boxes won't work.

Process 32Page six is is the first example of Blum's 2" increment drawers and the first example of inconsistent drawer registration. Here the distance from the top of the drawer face to the drawer box cannot be the same because the drawer boxes (unlike the Metabox slides/sides) are not in 32mm increments. The distance from the bottom of the face to the box is also not consistent because they mount the bottom drawer differently than the rest (bottom mount hole VS top). When 32mm increment drawers are all mounted using the bottom mount hole, the distance from the top and the bottom of the face is the same for all drawers.


Process 32Page nine explains the page eight layout: "The lower holes on 358M TANDEMBOX runners are not accessable. Mounting holes must be manually drilled only for the bottom drawer at 58.5mm". Here you have to drill mounting holes 12mm above the system hole that you would use if the cabinet box bottom wasn't in the way. Both these and the Tandem's could be mounted using a hole 16mm above instead of 12. A simple drill jig that registers to system holes is easier and could have other uses (e.g. drilling holes for rails). If you use both Tandem's and Tandembox's, center indexing is an option. Center indexing isn't pure system, but it has advantages that may outweigh the need to drill extra holes (e.g. maximum storage and a reduced number of box sizes).

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