How to correctly install and level a 3-piece slate.
Basic steps to leveling a 3 piece slate.
First of all, we’re going to have to break this down into sections, as leveling a 3 piece slate is more like a marriage between the slate and the frame of the table, with the floor interfering with the union of the two. You can’t talk about leveling the slates unless you go back to the beginning of first installing the frame of the table. I’ve broken down this process into different sections as you will understand the principals better this way. I can not even begin to explain all the different learned variables to this challenge as some of them are just learned over time because of having to work on all the different kinds of slates. Some methods are just improvised as you go. What I’m going to give you here in this lesson…LOL…is the basic principles of the system that I use to accomplish this feat.
Section 1: Installing the frame of the table.
Once you’ve packed in, assembled the frame, tightened all the necessary nuts and bolts, you’re ready to now level the frame of the table.
Step 1: In this first step, all you are concerned with is leveling out any possible twist in the frame of the table that may, or may not be present. Take a 4ft carpenter level or longer, place it on the table at one end, reading from side to side. Place your starrett level on top of the carpenter level. Pay attention to the machinist level, not the carpenter level. The carpenter level’s only purpose here is to give our machinist level a much wider base to sit on since all we’re concerned with at this time is the level of the frame; we’re NOT concerned with the end to end level at this point.
Checking both ends of the frame this way, take a mental note of the level of both ends of the frame. At this stage of the game, the table is already down on the floor as low as it can go as its setting on all 4 legs/feet, so from here you only have 2 legs/feet with which to level the side to side level of the frame. This can be tricky depending on what kind of table you’re installing. Some tables require you place shims under the feet, some you can place the shims between the frame and leg pedestals, and some tables have adjustable leg levelers. Only “you” know what you are working with at this point. Bottom line, level the frame of the table from side to side first. Once correcting the level at one end of the table, go to the other end and check, correct, then go to the other end, check, correct. Once the side to side is leveled, and no longer changing as you level it out, and now both ends read the same level from side to side, you’re now ready to level the table frame from end to end. Determine which end of the table is lowest, if either, then at that end of the table you only have to deal with the level of them two legs/feet, as the rest of the table is already level side to side. Raise the low end of the table at to match the high end to a level in which both ends are now the same level. You are now ready to install the slate.
As you can see in the top row of pictures I’m using a 6 foot carpenter’s level to check the level of the frame from side to side, then end to end. As you can see in (pic 4) the bubble reads level, but then I place my machinists’ level on the carpenter level and it now shows the table is still unleveled. This is why you only rely on the carpenter level to give your machinists” level a much longer base to more accurately read the level of the frame of the table. Trying to level the frame of the table with only a machinists’ level will drive you nuts because it’ll read differently every place you put it. All we’re trying to do here is find the center of the level from side to side and end to end. Once you place the slate on the frame, you’ll have to level the frame again, but not nearly as much with so much weight on the frame.
Basic steps to leveling a 3 piece slate.
First of all, we’re going to have to break this down into sections, as leveling a 3 piece slate is more like a marriage between the slate and the frame of the table, with the floor interfering with the union of the two. You can’t talk about leveling the slates unless you go back to the beginning of first installing the frame of the table. I’ve broken down this process into different sections as you will understand the principals better this way. I can not even begin to explain all the different learned variables to this challenge as some of them are just learned over time because of having to work on all the different kinds of slates. Some methods are just improvised as you go. What I’m going to give you here in this lesson…LOL…is the basic principles of the system that I use to accomplish this feat.
Section 1: Installing the frame of the table.
Once you’ve packed in, assembled the frame, tightened all the necessary nuts and bolts, you’re ready to now level the frame of the table.
Step 1: In this first step, all you are concerned with is leveling out any possible twist in the frame of the table that may, or may not be present. Take a 4ft carpenter level or longer, place it on the table at one end, reading from side to side. Place your starrett level on top of the carpenter level. Pay attention to the machinist level, not the carpenter level. The carpenter level’s only purpose here is to give our machinist level a much wider base to sit on since all we’re concerned with at this time is the level of the frame; we’re NOT concerned with the end to end level at this point.
Checking both ends of the frame this way, take a mental note of the level of both ends of the frame. At this stage of the game, the table is already down on the floor as low as it can go as its setting on all 4 legs/feet, so from here you only have 2 legs/feet with which to level the side to side level of the frame. This can be tricky depending on what kind of table you’re installing. Some tables require you place shims under the feet, some you can place the shims between the frame and leg pedestals, and some tables have adjustable leg levelers. Only “you” know what you are working with at this point. Bottom line, level the frame of the table from side to side first. Once correcting the level at one end of the table, go to the other end and check, correct, then go to the other end, check, correct. Once the side to side is leveled, and no longer changing as you level it out, and now both ends read the same level from side to side, you’re now ready to level the table frame from end to end. Determine which end of the table is lowest, if either, then at that end of the table you only have to deal with the level of them two legs/feet, as the rest of the table is already level side to side. Raise the low end of the table at to match the high end to a level in which both ends are now the same level. You are now ready to install the slate.
As you can see in the top row of pictures I’m using a 6 foot carpenter’s level to check the level of the frame from side to side, then end to end. As you can see in (pic 4) the bubble reads level, but then I place my machinists’ level on the carpenter level and it now shows the table is still unleveled. This is why you only rely on the carpenter level to give your machinists” level a much longer base to more accurately read the level of the frame of the table. Trying to level the frame of the table with only a machinists’ level will drive you nuts because it’ll read differently every place you put it. All we’re trying to do here is find the center of the level from side to side and end to end. Once you place the slate on the frame, you’ll have to level the frame again, but not nearly as much with so much weight on the frame.