Step 4Bulb 2 - Keep the threaded metallic part
Begin by removing the soft blob and the dark glassy part as in the previous step.
Then wrap the bulb in some newspaper and hit it with a hard object so the glass breaks. Remove the shards and start hacking away at the cement that the manufacturer used to bond the glass to the threaded metallic part.
It can take quite a while to get rid of all the cement from inside the metal, but it's not too difficult to do it.
When finished with this you've got a hollow bulb (from the other bulb) that you can insert into the threaded part from this step. The bulb should have glass about 1 cm (1/3 inch) down into the metal when fully inserted.
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