How to Fix Chipped Hammers: A Blacksmith’s Guide to Restoration
Chipped hammers are a common issue that many blacksmiths face. They can be frustrating, but with the right knowledge and tools, they can be easily fixed. In this tutorial-style post, we will discuss what causes chipping in hammers and how to fix them.
Firstly, it’s important to understand that chipping is caused by repeated impact on hard surfaces. This is especially true for hammers used for striking metal objects like anvils or other hard materials. Over time, these impacts cause tiny fractures in the hammer’s head which eventually grow into larger chips.
One of the best ways to prevent chipping is by using a softer surface like a lead block or rubber mat when striking metal objects. This helps reduce the amount of stress placed on the hammer’s head and decreases the chances of chipping occurring.
However, if you do find yourself with a chipped hammer, there are several steps you can take to fix it:
Step 1: Remove Any Loose Pieces
Before attempting any repairs on your damaged hammer, make sure to remove any loose pieces of metal from its head. Use pliers or tweezers to carefully extract any fragments that may have broken off during use.
Step 2: Assess The Damage
Next, assess how much damage has been done to your hammerhead. If only small chips have occurred then you may be able to file them down with a fine-grit sandpaper or emery cloth until they’re smooth again.
If however your hammer has sustained significant damage (large chips), then more drastic measures may need to be taken such as grinding or welding depending on what type of material your hammer is made from.
Step 3: File Away The Chips
Using a bench grinder or belt sander equipped with an abrasive disc (60-80 grit) start removing the edges around the chip(s). Ensure that you grind away at least 1/8″ beyond all visible damage to avoid any potential weak spots. You must work slowly and carefully to avoid damaging the hammerhead further.
Step 4: Smooth Out The Edges
Once you have filed away all of the chips, it’s time to smooth out the edges. Use a fine-grit sandpaper or emery cloth and begin filing away at the rough edges until they’re smooth again.
Step 5: Welding (Optional)
If your hammer has sustained significant damage, welding may be required. If you are not experienced in welding, then we recommend seeking help from an expert blacksmith who can provide guidance on this process.
However, if you are familiar with welding techniques, ensure that you utilize a welder that is appropriate for your hammerhead material (i.e., MIG or TIG). Then proceed with caution by following all safety protocols when using hot equipment such as gloves and protective eyewear.
Step 6: Hardening And Tempering
Following grinding or welding repairs, hammers typically lose their temper which affects their hardness making them more susceptible to future chipping. Therefore after finishing these processes, it’s essential that you re-harden and temper your hammer properly before use once again.
To do this, heat up the head of your hammer using a propane torch until it glows red hot uniformly throughout its surface area. Next quench it in oil-based quenchant like vegetable oil while keeping agitation minimal. Finally temper by reheating only the striking face of your hammer till pale yellow color appears on metal surface followed immediately by cooling down under running water/air cooling. This will restore its strength so that it can withstand repeated impacts without brittle failure occurring anytime soon.
In conclusion, chipped hammers are frustrating but fixable issues faced regularly by blacksmiths worldwide! By following these steps above including careful grinding/filing down damaged areas followed by proper hardening & tempering procedures; one can restore their trusty tool to its former glory once again! Remember, prevention is better than cure so always use softer surfaces and avoid overworking your hammer unnecessarily while striking hard objects. Happy forging!