Jointer-Planer Introduction

This is the content required for an introduction to our jointer-planer combination machine - reading this does NOT replace the mandatory session with a tutor! It will make it a lot quicker though ;-)

If you need this introduction, please reach out to the following tutors: Lukas, Lars, Sebastian

Let's begin! First off, make sure you have read the machine's manual (felder-gruppe.at (DE), (EN))

This is one of those machines that can cause very serious injuries when something goes wrong, so do not use if you are alone in the Space.

possible workpiece dimensions

Safety Notes for Jointer and Planer Modes

Personal protection:

Additional protection for toxic or allergenic hardwoods (especially hardwoods, e.g. beech and oak) or for certain surface finishes or chemicals:

you MUST NOT (red) wear hand and arm jewelry, including watches and rings, or loose long clothing

Dangers	Precautions
Risk of serious injury	This is a dangerous machine with a risk of serious injury. NEVER use this machine when you are alone in the space!
rapidly revolving knives	you MUST NOT wear gloves, loose clothes, jewelry including rings and watches/wristbands, or open long hair
loud machine (>90db)	you MUST wear ear protection
flying splinters	you MUST wear eye protection
toxic dust (depending on surface finish and wood species)	if your workpiece is contaminated with chemicals or is made from hard woods like beech (Buche) or oak (Eiche), you SHOULD use a dust mask of P2 or higher. ALWAYS use the dust extraction system.

Additional Safety Notes for Jointer Mode

attach the auxiliary fence whenever the "wide" face does not offer enough space for your hand to sit on

Dangers	Precautions
rapidly revolving knives - exposed at the top: draw-in and cutting danger	you MUST use the blade guard - only expose as much of the blade as needed whenever your hand can't comfortably sit on the wide face of your workpiece, use the auxiliary fence as well (hangs on the wall nearby) you SHOULD use push blocks with a lip at the back - ONLY IF you are unable to use a push block: you are risking your fingers being pulled into the rotating blades and dismembering them you MUST keep your hands flat and fingers together you MUST keep your hands ON the workpiece - NEVER hold or push the workpiece from the sides, NEVER let your hands move over any part of the workpiece you MUST use push blocks on any workpiece that is not large enough for your to hold down with your hands without any part of your hand overhanging the workpiece
kickback: the jointer may grab the workpiece and throw it back to the infeed side	you MUST stand firmly on the long side of the machine, exert light downward pressure on the whole workpiece, and MUST NOT walk during operation you MUST ensure that the infeed side is clear of people for several meters you MUST stop immediately if other people step into the infeed area you MUST inspect your workpiece for difficult areas in advance - knots are tricky enough but loose knots MUST be removed beforehand! you MUST start with a low cutting depth of <=1mm you MAY increase the depth to <=2mm - the higher the cutting depth, the higher the force, the more violent a possible kickback you MUST NOT pull the workpiece back during a cut - always finish the current cut before stopping to increase the depth etc.

Additional Safety Notes for Planer Mode

Dangers	Precautions
rapidly revolving knives	you MUST NOT put your hands near the top planer housing during operation you MUST NOT insert your fingers into the gap between feed table and top cover
kickback: the transport mechanism may fail and fire the workpiece out	you MUST check the anti-kickback teeth for free movement before using the planer you MUST ensure that the infeed side is clear of people for several meters you MUST NOT plane more than two boards at once you MUST NOT simultaneously plane two boards with different thicknesses

Demonstration

The tutor will show you these steps in detail:

Preparation

• all sides of your workpiece must have a width of ≤ 300 mm - while the jointer can take a few millimeters more, the planer won't.
• inspect your workpiece for loose parts - especially knots - and remove them
• inspect your workpiece for bits of metal (e.g. nails or staples) - if you are not 100% sure it's clean, cut off any uncertain areas with a saw
• check yourself for anything that might get caught in the machine - wrist watch, finger rings, bracelets, jewellery, cables, sleeves, hair, ... - and remove these items!
• check that the surroundings of the machine are clear of debris and no one is in danger of being hit by a kickback
• switch to jointer mode, if the machine currently is in planer mode - cf. manual: 8.8
• check that the vacuum hose is connected securely to the jointer
• check that the vacuum power button is on ("1", it will then be triggered automatically when the jointer is started)

Planning the Joint

1. Identify the wood grain for the proper feed direction - you MUST work parallel to the grain (trying to joint 90° to the grain will always result in chipout at the end) and SHOULD work with the grain for best results
2. Choose the correct large face for the first planing (the hollow / concave side, not the arched / convex side) - mark side as 1)
3. Choose one of the connected smaller sides to make 90° to side 1) in the same way - mark as side 2)
4. The side opposed to side 2) is side 3) - this side will be made parallel on the table saw (for more rectangular parts like boards) or by planing (for square-shaped parts)
5. Lastly, the side opposite to side 1) is side 4 and will be made parallel by planing

So, the correct order is: (1) large face, (2) 90° of first small face, (3) parallelize the second small face, (4) parallelize the second large face

(1) Joint the First Large Face

(DE: Abrichten)

• adjust the jointer chipload (Spanabnahme) to ≤ 1 mm - manual: 8.2
• adjust the jointer blade guard (Brückenschutz/Schutzbrücke)
  • the guard should be covering the full width of the blade and hover just above the workpiece
  • if the workpiece is narrower than your hand, first attach the auxiliary fence (hangs on the wall nearby) for the rest of your hands to slide on
• stand centered, ensure no one is in risk of getting hit by kickback, activate machine
• workpiece is moved over the table with steady downward pressure, hands slide over the guard and "walk" on the outfeed table
  • as soon as you can put firm pressure on the outfeed side ("finished" part of the workpiece), it may improve results to reduce pressure on the infeed (especially with thin and warped boards)
• check face and repeat until flat
• cf. manual: 9.4.4 & 9.4.5

(2) Joint the First Small Face

(DE: Fügen)

• check the fence for 90° against the table - cf. manual 8.4
• adjust the guard to be directly on the table (zero height)
• adjust the guard to leave a small gap for the workpiece to ride through
• stand centered, ensure no one is in risk of getting hit by kickback, activate machine
• workpiece is moved with even pressure over the table, pressure against the fence and downwards on the table - fingers together, hands stay clear of the blades
• repeat until face is plane and right-angled to side 1 (check the whole face with a square)
• cf. manual: 9.4.6

(3) Parallelize the Second Small Face

If your workpiece is more rectangular-shaped than square-shaped, you SHOULD use the table saw instead of the planer. The table saw is much quicker, you can directly adjust the width to the desired measurement (without creating tons of wood dust), and it's much cleaner (because the suction does not work well when the planed edge is too small and the table is too far away).

The planer also has a maximum height of 22.5 cm - if your workpiece is taller, you MUST use the table saw instead.

If your workpiece is too narrow to be safely inserted with a 90° angle to side 2, you MUST use the table saw instead.

Otherwise, you may use the planer mode as described in detail for step 4.

(4) Parallelize the Second Large Face by Planing

• switch machine to planer mode - cf. manual: 8.7
• measure the wood piece's width broadest point
• adjust the table height to the measured width (open table lock, use wheel to adjust height, close lock) - cf. manual: 8.5
• activate the transport gears (lift and release the lever on the left)
• stand beside the planer infeed, ensure no one is in risk of getting hit by kickback, activate machine
• lightly push the workpiece in until it's gripped by the transport rolls - let go and move to the other side and take over the workpiece. NEVER reach under the cover with your hands while the machine is powered!
  • the first transport roll is a bit hard to overcome if you try to take away more than 1 mm
  • if the workpiece feels stuck and does not move in either direction (due to the automatic kickback protection), deactivate the machine and lower the table to remove it
  • avoid the edges of the small grooves in the side - your workpiece might bump upwards or get stuck if it moves over the grooves
• slightly raise the table (≤ 1 mm for larger faces, ≤ 2 mm for small faces)
• repeat until the face is flat

(5) Cleanup

• clean the whole machine and surroundings from wood splinters and dust
• clean the tables from wood resin with alcohol
• check the vacuum: if the bag is more than 3/4th full, replace vacuum bag. Close full bag with yarn (located at the measuring station) and move to the central box for wood collection (or, ideally: the recycling yard!). A new bag is on top of the measuring shelf.
• disengage the planer transport gears, if necessary (pull the lever on the left out and down)
• switch machine to jointer mode

Advanced Usage / Topics

• adjusting the jointer Fuge - manual: 8.3
  • rarely needed! return to original (described) setting if altered?
  • a very slight Hohlfuge is desirable for many glue-ups: you'll need fewer clamps and the ends of your boards will always connect in a panel ^[1]
  • to test the result: let two jointed boards face each other - you will thus amplify the extent of curve (x2) to make it more visible ^[2]
• angling two sides to another angle than 90°

helpful links besides the manual:

• BGHM Arbeitsschutz kompakt: Arbeiten an Abrichthobelmaschinen
• BGHM Arbeitsschutz kompakt: Arbeiten an Dickenhobelmaschinen
• video by Heiko Rech (DE) with important safety information we can use to define the introduction
• video by MHM (DE) longer safety and usage instruction

Waiting List

This introduction takes longer than many others and usually can't be done spontaneously during regular opening times. If you would like to receive it, please add yourself to >> this list << and we will find a good time once a few members are on it!