Bill,

I understand why you'd think so but I dont think it needs it. The mill base is bolted into the cross-members with 8" long 1/2" coach bolts and the cross members at the bottom are similarly bolted to the side runners. The centre of gravity is directly between the legs. As part of the testing before I put the mill on the base I put it on end (so the legs were horizontal) and stood on the end of the legs without it budging.. and I weigh 76kg. For the legs to fold therefore it would need more than 76kg of side force and would have to rip the 1/2" coachbolts out of the wood.

I will be putting some side members on to support an intermediate shelf for the tooling and that will add further fore-aft integrity.

regards,
Irving...