Disc Grinder Introduction: Difference between revisions
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This is the content required for an introduction to our [[Disc Grinders|disc grinders]] - '''reading this does NOT replace the mandatory session with a [[tutor]]!''' It will make it a lot quicker though ;-) | This is the content required for an introduction to our [[Introduction for::Disc Grinders|disc grinders]] - '''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: [[Tutor::User:Lukas|Lukas]], [[Tutor::User:Pakue|Patrick]], [[Tutor::User:Luzian|Luzian]], [[Tutor::User:Johannes|Johannes]] | |||
Let's begin! First off, make sure you have read the machine's manual, if available (should be linked from its InfoBox). | Let's begin! First off, make sure you have read the machine's manual, if available (should be linked from its InfoBox). | ||
== Safety == | == Safety == | ||
[[PPE|Personal protection]]: [[File:Protection - goggles.svg|50px]] [[File:Protection - face shield.svg|50px]] [[File:Protection - hearing.svg|50px]] [[File:Protection - | [[PPE|Personal protection]]: [[File:Protection - goggles.svg|50px]] [[File:Protection - face shield.svg|50px]] [[File:Protection - hearing.svg|50px]] [[File:Protection - gloves.svg|50px]] | ||
''[[Breathing Protection|Breathing protection]] might also help depending on your material, but unless it can filter fumes you should always take care of sufficient ventilation.''<sup> [https://www.bghm.de/arbeitsschuetzer/praxishilfen/arbeitsschutz-kompakt/074-winkelschleifer/]</sup> | |||
{| class="wikitable" | {| class="wikitable" | ||
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| generation of hot sparks that are expelled in varying directions || | | generation of hot sparks that are expelled in varying directions || | ||
* wear [[goggles]] AND a [[Face Shields|face shield]] to protect your eyes | * wear [[goggles]] AND a [[Face Shields|face shield]] to protect your eyes | ||
* never use it without the blade guard | |||
* understand the spark direction, which will always be tangential to the point of the disc that is in contact with the workpiece | * understand the spark direction, which will always be tangential to the point of the disc that is in contact with the workpiece | ||
* coordinate your activity with others in the area | * coordinate your activity with others in the area | ||
| Line 17: | Line 22: | ||
|- | |- | ||
| sparks fly very far and deposit themselves as fine dust | | sparks fly very far and deposit themselves as fine dust | ||
* metal | * metal fumes and fine dust can be a health hazard when inhaled<sup> [https://en.wikipedia.org/wiki/Metal_fume_fever]</sup> | ||
|| | || | ||
wear a | take care of sufficient ventilation and/or wear a fume-filtering [[respirator]] when working with a grinder | ||
|- | |- | ||
| [[File:Danger_-_sudden_start.svg|left|50px]] some of our grinders have no prevention of turning on after loss & restoration of power ''(keine Anlaufsicherung)'' || if the power has been lost for whatever reason, always return the power button to the "off" position before restoring it! | | [[File:Danger_-_sudden_start.svg|left|50px]] some of our grinders have no prevention of turning on after loss & restoration of power ''(keine Anlaufsicherung)'' || if the power has been lost for whatever reason, always return the power button to the "off" position before restoring it! | ||
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| possible kickback if the disc gets caught on the material || | | possible kickback if the disc gets caught on the material || | ||
* put the workpiece in a [[vise]] or [[clamp]] it down during grinding | * put the workpiece in a [[vise]] or [[clamp]] it down during grinding | ||
* hold the machine firmly with both hands | * hold the machine firmly with '''both hands''', one-handed operation causes 40% of all accidents<sup> [https://www.bghm.de/arbeitsschuetzer/praxishilfen/arbeitsschutz-kompakt/074-winkelschleifer/]</sup> | ||
* try not to shift the disc during a (deep) cut | * try not to shift the disc during a (deep) cut | ||
* let the disc get to full speed before you start grinding | * let the disc get to full speed before you start grinding | ||
|- | |- | ||
| [[aluminum]] can clog | | [[aluminum]] and other non-ferrous metals ''(DE: Nichteisenmetalle)'' can clog regular abrasive discs and cause them to overheat until they break/"explode" || do NOT use generic "metal" discs on aluminum! You will need to buy specialized aluminum cutting discs or accomplish your task with a more suitable tool. | ||
|- | |- | ||
| a disc that is off-center or loose is very dangerous || after inserting a new disc, let it run freely for a minute and make sure it runs safe and true | | a disc that is off-center or loose is very dangerous || after inserting a new disc, let it run freely for a minute and make sure it runs safe and true | ||
|} | |} | ||
== Changing Discs == | |||
Please avoid overtightening the nut holding the disc in place! It should only be '''tightened softly by hand''' but may be '''loosened with the associated "pin" wrench''' if necessary. The direction of the motor's rotation is enough to tighten the nut to the appropriate degree. | |||
== Suggested Reading == | == Suggested Reading == | ||
Latest revision as of 17:09, 10 December 2023
This is the content required for an introduction to our disc grinders - 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, Patrick, Luzian, Johannes
Let's begin! First off, make sure you have read the machine's manual, if available (should be linked from its InfoBox).
Safety
Breathing protection might also help depending on your material, but unless it can filter fumes you should always take care of sufficient ventilation. [1]
| Dangers | Precautions |
|---|---|
| generation of hot sparks that are expelled in varying directions |
|
sparks fly very far and deposit themselves as fine dust
|
take care of sufficient ventilation and/or wear a fume-filtering respirator when working with a grinder |
 |
if the power has been lost for whatever reason, always return the power button to the "off" position before restoring it! |
 |
wear suitable gloves to prevent burns from sparks or the workpiece |
| possible kickback if the disc gets caught on the material | |
| aluminum and other non-ferrous metals (DE: Nichteisenmetalle) can clog regular abrasive discs and cause them to overheat until they break/"explode" | do NOT use generic "metal" discs on aluminum! You will need to buy specialized aluminum cutting discs or accomplish your task with a more suitable tool. |
| a disc that is off-center or loose is very dangerous | after inserting a new disc, let it run freely for a minute and make sure it runs safe and true |
Changing Discs
Please avoid overtightening the nut holding the disc in place! It should only be tightened softly by hand but may be loosened with the associated "pin" wrench if necessary. The direction of the motor's rotation is enough to tighten the nut to the appropriate degree.
Suggested Reading
Besides these safety notes, you should know about abrasive discs, especially the difference between grinding and cutting discs!
