First time using these, they're the undermount 563 series. Instructions all over the web says 21mm from cab side to inside edge of the drawer side, 7mm from there a 6mm hole. Do all this and they don't fit. Checked and rechecked my measurements and they are spot on. My math says 21mm and 7mm puts the holes 28mm from the cab sides. the pins on the slides are 30mm from the cab sides. How is this going to work?? Well it doesn't. Have to redrill the holes 2mm over. Any thoughts?
It's not as simple as a side mount drawer where you take the opening measurement and subtract an amount and you have your drawer width.
They have a somewhat simple formula that takes into account the drawer side material thickness to calculate the width of the drawer.
The reason for the formula is Blum is looking for the inside of the drawer dimension, not the OD. I've made up an Excel spread sheet with a formula that calculates the width of a drawer depending on the material thicknesses. I use 15mm Baltic Birch plywood for the most part and it varies in thickness like most plywood does between .580" and .605" so I pop that specific number into my spreadsheet after measuring it with a caliper.
If you are using solid wood it's much simpler to use standard thicknesses and just subtract the required amount according to their chart.
Either make or buy their jig to drill the hole in the rear of the drawer. I've made a router jig to get the notch for the back side. The corners aren't square on the notch, I use a 1/4" flush cut bit and I haven't had any issues. If you don't have a notcher you need to use a tablesaw or a router jig to make the notches. Or just have the back side of the drawer undercut so there is nothing hanging down.
Getting set up is the hard part. After you do that the drawers are much easier to use than a side mounted slide. You are only mounting the slide and then a simple lock under the drawer. No aligning a set of slides to each other.
Where C8 is the opening width and C5 is the material thickness. 1.656 is 42mm I believe converted to inches which is part of the Blum formula
Thank you gentlemen. I understand the calculations to determine the OD based on the material thickness and that is what I did (15mm BB) but if the inside edge is 21mm from the cab side, and the locating hole is 7mm from that edge, doesn't make sense that if you measure from the side of the cabinet to the pin it should be 28 mm? That's where I'm having a problem because every which way I measure the pin is 30mm from the cab side.
Take a look at the attached. Looking at only one side of the drawer the inside of the drawers is 21mm from the cabinet side, the pin hole is 7mm, so 28mm from the cab side. When I measure the pin on the slide from the cab side it's 30mm to it's center.
I think the runners have enough movement (slop) that they will move 2mm inward from the 30mm you see. I use those measurements and have never had a problem. Have you checked to insure the upward measurement is correct also.
Hope you get it sorted out but the dimensions in the drawing do work for me.
Mystery solved, the slides I received were 563F, the instructions I was following was for the 563H. Inside drawer measurment is 21mm for the H, 24.5mm for the Fs. First time with these slides. glad it was me and not the product. Thanks guys.
FORUM GUIDELINES: Please review the guidelines below before posting at WOODWEB's Interactive Message Boards(return to top)
WOODWEB is a professional industrial woodworking site. Hobbyist and homeowner woodworking questions are inappropriate.
Messages should be kept reasonably short and on topic, relating to the focus of the forum. Responses should relate to the original question.
A valid email return address must be included with each message.
Advertising is inappropriate. The only exceptions are the Classified Ads Exchange, Machinery Exchange, Lumber Exchange, and Job Opportunities and Services Exchange. When posting listings in these areas, review the posting instructions carefully.
Subject lines may be edited for length and clarity.
"Cross posting" is not permitted. Choose the best forum for your question, and post your question at one forum only.
Messages requesting private responses will be removed - Forums are designed to provide information and assistance for all of our visitors. Private response requests are appropriate at WOODWEB's Exchanges and Job Opportunities and Services.
Messages that accuse businesses or individuals of alleged negative actions or behavior are inappropriate since WOODWEB is unable to verify or substantiate the claims.
Posts with the intent of soliciting answers to surveys are not appropriate. Contact WOODWEB for more information on initiating a survey.
Excessive forum participation by an individual upsets the balance of a healthy forum atmosphere. Individuals who excessively post responses containing marginal content will be considered repeat forum abusers.
Responses that initiate or support inappropriate and off-topic discussion of general politics detract from the professional woodworking focus of WOODWEB, and will be removed.
Participants are encouraged to use their real name when posting. Intentionally using another persons name is prohibited, and posts of this nature will be removed at WOODWEB's discretion.
Carefully review your message before clicking on the "Send Message" button - you will not be able to revise the message once it has been sent.
You will be notified of responses to the message(s) you posted via email. Be sure to enter your email address correctly.
WOODWEB's forums are a highly regarded resource for professional woodworkers. Messages and responses that are crafted in a professional and civil manner strengthen this resource. Messages that do not reflect a professional tone reduce the value of our forums.
Messages are inappropriate when their content: is deemed libelous in nature or is based on rumor, fails to meet basic standards of decorum, contains blatant advertising or inappropriate emphasis on self promotion (return to top).
Libel: Posts which defame an individual or organization, or employ a tone which can be viewed as malicious in nature. Words, pictures, or cartoons which expose a person or organization to public hatred, shame, disgrace, or ridicule, or induce an ill opinion of a person or organization, are libelous.
Improper Decorum: Posts which are profane, inciting, disrespectful or uncivil in tone, or maliciously worded. This also includes the venting of unsubstantiated opinions. Such messages do little to illuminate a given topic, and often have the opposite effect. Constructive criticism is acceptable (return to top).
Advertising: The purpose of WOODWEB Forums is to provide answers, not an advertising venue. Companies participating in a Forum discussion should provide specific answers to posted questions. WOODWEB suggests that businesses include an appropriately crafted signature in order to identify their company. A well meaning post that seems to be on-topic but contains a product reference may do your business more harm than good in the Forum environment. Forum users may perceive your references to specific products as unsolicited advertising (spam) and consciously avoid your web site or services. A well-crafted signature is an appropriate way to advertise your services that will not offend potential customers. Signatures should be limited to 4-6 lines, and may contain information that identifies the type of business you're in, your URL and email address (return to top).
Repeated Forum Abuse:
Forum participants who repeatedly fail to follow WOODWEB's Forum Guidelines may encounter difficulty when attempting to post messages.
There are often situations when the original message asks for opinions: "What is the best widget for my type of shop?". To a certain extent, the person posting the message is responsible for including specific questions within the message. An open ended question (like the one above) invites responses that may read as sales pitches. WOODWEB suggests that companies responding to such a question provide detailed and substantive replies rather than responses that read as a one-sided product promotion. It has been WOODWEB's experience that substantive responses are held in higher regard by our readers (return to top).
The staff of WOODWEB assume no responsibility for the accuracy, content, or outcome of any posting transmitted at WOODWEB's Message Boards. Participants should undertake the use of machinery, materials and methods discussed at WOODWEB's Message Boards after considerate evaluation, and at their own risk. WOODWEB reserves the right to delete any messages it deems inappropriate. (return to top)
Forum Posting Form Guidelines
The name you enter in this field will be the name that appears with your post or response (return to form).
Personal or business website links must point to the author's website. Inappropriate links will be removed without notice, and at WOODWEB's sole discretion. WOODWEB reserves the right to delete any messages with links it deems inappropriate. (return to form)
Your e-mail address will not be publicly viewable. Forum participants will be able to contact you using a contact link (included with your post) that is substituted for your actual address. You must include a valid email address in this field. (return to form)
Subject may be edited for length and clarity. Subject lines should provide an indication of the content of your post. (return to form)
Thread Related Link and Image Guidelines
Thread Related Links posted at WOODWEB's Forums and Exchanges should point to locations that provide supporting information for the topic being discussed in the current message thread. The purpose of WOODWEB Forums is to provide answers, not to serve as an advertising venue. A Thread Related Link that directs visitors to an area with inappropriate content will be removed. WOODWEB reserves the right to delete any messages with links or images it deems inappropriate. (return to form)
Thread Related File Uploads
Thread Related Files posted at WOODWEB's Forums and Exchanges should provide supporting information for the topic being discussed in the current message thread. Video Files: acceptable video formats are: .MOV .AVI .WMV .MPEG .MPG .FLV .MP4 (Image Upload Tips) If you encounter any difficulty when uploading video files, E-mail WOODWEB for assistance. The purpose of WOODWEB Forums is to provide answers, not to serve as an advertising venue. A Thread Related File that contains inappropriate content will be removed, and uploaded files that are not directly related to the message thread will be removed. WOODWEB reserves the right to delete any messages with links, files, or images it deems inappropriate. (return to form)
The editors, writers, and staff at WOODWEB try to promote safe practices.
What is safe for one woodworker under certain conditions may not be safe
for others in different circumstances. Readers should undertake the use
of materials and methods discussed at WOODWEB after considerate evaluation,
and at their own risk.