After drilling the tip rib...The other right tip rib job got to be postponed until i find the missing raw stock or a new part is fabricated.

With the tip rib placed in positioned , drilling would start anytime soon.

I have made yet another mistake here w/regs to flange doubler,counterweight rib. Thinking that there was only one piece, i cut the four pieces of 5" length from the raw stock. When i realised the blunder, it was too late. The other raw stock has yet to be accounted for.May have left it in Kuala Lumpur or somewhere in my apartment in Singapore. All was not lost as i tried to rectify the problem again. Here four pieces were clamped together for marking purpose.

The rest of drilling include fore-to-aft rib rivet holes...

Position and drill the upper left skin. Here, the forwardmost and aftmost Rib B holes along the inboard edge of the skin were drilled up to #40 size to accept Clecos.

Filing in progress...

Mark and cut the trim cable slot in the upper left skin.

The trailing joggle edge are drilled with #40 bit with wood support underneath to avoid wavy trailing result.

need i say more..

Drilling at each rib location along the forward spar first followed by fore to aft rib rivet hole with #40 bit.

Position and drill the upper skin.

Here, the retainer clip was positioned and drilled through pilot holes with #19 bit.I used AN526-8R6 round head machine screw and K1000-08 nutplate to hold the clip in alignment while drilling the second hole. Yes, finally i realised my earlier mistake and it was evident in this photo.Problem solved.

The four pre-punched locations on the right hand side of the forward gate were drilled through the right bracket angle, spacer and aft gate.

I have switched to 90 degrees angle drilling using pneumatic source for drilling the four pre-marked locations of the stiffeners Rib A and B. Finally, all the assembly were clamped together with forward gate, bracket angle , spacer and aft gate in that order for later drilling.

After drilling at marked loactions with #30 bit.

I got confused with the orientation of the left/right bracket angle in relation its final resting place on the Rib A and B respectively. After spending some time checking and re-checking , i finally clamped the right bracket angle onto Rib B with two new vise grip clamps i bought from Dubai.

Close up view of the trim tab pushrod after cutting and filing to perfection.

Guess what i finally found the missing Dremel cutter adapter.. still unaware of my earlier mistakes.

Having "final" drilled the #40 rivet holes with #30 bit.

Yet another mistake..guess if i had cut the trim tab pushrod hole as scheduled, i would have detected the mistake before drilling. Lesson learnt.

Aheem..i have made a major mistake here by positioning and drilling the control horn attach angle wrongly. I only realised my mistake later on before rectifying the problem. Sigh..The attach angle's hole A should to positioned further up to the spar flange.

Note: i have traced the three hole positions for the trim tab pushrod on the lower left skin. Also, note the #30 rivet holes after the first three #40 rivet holes on the rib s counting from fore to aft as before.

History repeated for the lower left skin ie. drilling the forward spar first,etc...

Double checking the twist along the elevator.