Improved rubber flap for knee mills

slow-poke

Ultra Member
When I purchased my very used 8x30 knee mill, the rubber flap that protects the ways was missing. I tried the PA toolbox liner as some have suggested and found it was to bulky and inflexible especially when the table was up and towards the column. I have had good success with thin silicone mat on my lathe, so I purchased similar for the mill and it's definitely much better. Link to Amazon below. First image is all the way up and back. I imagine a full size bridgeport might need a longer piece, I did fine larger offerings at Amazon for $3-4 more. The one in the link is plenty big for a 8x30"

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PeterT

Ultra Member
Premium Member
I tried some on my lathe but eventually removed it. Maybe it was not real silicone but I've heard it can swell & degrade with certain oils & cutting fluids. As long as it does the job for a good amount of time, mission accomplished. Depending on the durometer, you might also find that swarf embeds in it. Other flexible materials might hold up better but some are stiff & curl in weird ways.
 

DPittman

Ultra Member
Premium Member
I tried some on my lathe but eventually removed it. Maybe it was not real silicone but I've heard it can swell & degrade with certain oils & cutting fluids. As long as it does the job for a good amount of time, mission accomplished. Depending on the durometer, you might also find that swarf embeds in it. Other flexible materials might hold up better but some are stiff & curl in weird ways.
I used a silicone baking sheet on my lathe but the oil made it swell/curl and get a bit goopy. I did have it on for quite a while however.
 

MrWhoopee

Active Member
Here's the stuff I used. Neither hot chips nor oil have affected it. Not nearly as flexible as that silicone, but very durable.

 

Mcgyver

Ultra Member
Most won't stand up to oils, but seek out neoprene rubber, that's the stuff that stands up to the oil. I bought a piece from Mcmaster, do a search there, they have black in various thickness as well as the one Mr Whoopee linked to.
 

PeterT

Ultra Member
Premium Member
Yes, Neoprene is very oil resilient & comes in different thicknesses which might help with folding issues. I bought (well, was donated) an offcut from a distributor in Calgary but I think its generally available in most cities. Its used a lot around here for big gaskets, many in harsh environments.

 
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