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+Bow - Homemade Spring-Powered Nerf Rifle

Step 29Step Twenty Nine

Step Twenty Nine
Clean out the inside of the plunger tube then spray a generous amount of silicone lubricant into it.

ONLY USE SILICONE LUBRICANT WITH PLASTICS. It's the only lubricant that won't eat away or degrade the material.

Install the plunger rod and spring in the plunger tube. Work the plunger rod back and forth in the plunger tube a few times to get the o-rings lubricated.
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1 comment
Jun 1, 2011. 10:26 PMarmored bore says:
In my vast engineering intellect, I think I cut my plunger rod a bit too short for the whole spring. Should I trim down the spring to fit it?

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