How to Adjust and Tighten Glasses at Home

Simple fixes for glasses that slide, pinch, or sit crooked, for acetate and metal frames.

Even a well-made frame can feel a little off when it first arrives, or after months of daily wear. Glasses slide down, press behind the ears, or sit slightly crooked. The cause is usually a small change in the shape of the temples or nose pads, and a small adjustment often fixes it.

This guide shows you how to make those adjustments safely at home, with diagrams. It covers both kinds of Aldermiller frames: acetate models, which are made entirely of acetate (a plant-based plastic), and metal models, which have metal frames and temples with acetate temple tips. It also tells you when to stop and let a professional take over, because a few minutes of care can save you a broken frame.

Before you start Go slowly. Make tiny changes, then try the glasses on. It is much easier to bend a little more than to undo a bend that went too far. Stop if you feel strong resistance, hear a creak, or see a white stress line in the acetate. Don't force it. Keep heat and water away from the lenses. Warmth can damage lens coatings. Work over a soft towel on a table, and protect your eyes. Small parts and screws can spring loose. If you think you might want to return your glasses, email us before adjusting them.

 

A few terms make the rest of this guide easier to follow.

●      Temples are the arms. The hinge at the front joins each temple to the frame and usually has a tiny screw.

●      The bend is where the temple curves down to go over your ear. The temple end (tip) is the part behind your ear. On our metal models, the temple arm is metal and the tip is acetate.

●      The bridge rests on your nose. On metal frames, adjustable nose pads are attached to it. Many acetate frames have no pads, so the bridge itself sits on your nose.

How the two kinds of models behave

	Acetate models	Metal models
Made of	All acetate	Metal frame and temple arms, with acetate temple tips
Bending	Stiff when cool, so the temple end must be warmed gently first. Cold bending can crack it	The metal arm bends without heat but springs back. The acetate tip softens with gentle warmth
Holds its shape	Holds a new shape well once it cools	The metal arm may spring back slightly, so work in small steps. The warmed tip holds its new curve once cool
Nose fit	Usually fixed. Little room to adjust	Often has pads you can move
Biggest risk	Overheating, cracking from force	Over-bending the thin metal, or bending right at the joint where the metal meets the tip

●      A small screwdriver that fits your hinge screws (an eyeglass repair kit works well)

●      A soft towel or cloth

●      A bowl of hot tap water (for acetate parts only: acetate models, or the temple tips of metal models)

●      A mirror, and a helper if you have one

●      A flat table

You don't need pliers. Fingers give you much better control, and tools can scratch or snap a frame.

What you notice	Likely cause	What to adjust
Hinges wobble, or a temple feels floppy	Loose hinge screw	Tighten the screw (section 4)
Glasses slide down your nose	Temple ends too open; nose pads too wide (metal models)	Bend temple ends slightly down; move pads closer
Pressure behind the ears or at the temples	Temple ends too tight	Ease temple ends slightly up and out
Pinching on the sides of the nose	Pads too close together, or the bridge is too narrow	Spread the pads slightly; if acetate, ask us
One side sits lower or looks tilted	Temples uneven	Adjust the lower side's temple end (section 6)
Glasses sit too low or too high	Pad position or temple angle	Move pads in or out, or adjust the temple ends

Check the screws first. Many fit problems are just a hinge that has worked loose.

1.  Rest the glasses on a soft towel with the temples open.

2.  Choose a screwdriver that fits the screw head snugly. A loose fit can strip the head.

3.  Turn the screw clockwise until it is snug. Stop when it firms up. Over-tightening can strip the screw or crack the frame.

4.  Open and close the temple a few times. It should move smoothly without wobbling.

5.  Check both sides.

If a screw is missing, the screw head is stripped, or the screw keeps coming loose, stop and email us or visit an optician. Don't use a substitute screw.

All of our acetate models are made entirely of acetate. Acetate holds its shape well, but it needs gentle warmth to bend safely. Warm only the part you are adjusting, usually the temple end.

1.  Fill a bowl with hot tap water. Never use boiling water, a microwave, a hair dryer, or a heat gun. Too much heat can warp the frame and damage lens coatings.

2.  Dip only the temple end (the part behind your ear) into the water for about 30 to 60 seconds. Keep the lenses and the front of the frame out of the water.

3.  Dry the temple and test the temperature with your fingertip. It should feel warm, not hot.

4.  Support the temple at its bend with one finger, and use your other hand to move the end a few millimeters (see the picture).

5.  Hold the new shape for about half a minute while it cools, then put the glasses on and check the fit.

6.  Repeat in small steps. Do both sides so they match.

●      To tighten (glasses slide): press the temple ends slightly down and a touch inward.

●      To loosen (pressure behind ears): ease the temple ends slightly up and a touch outward.

Start with two checks.

1.  Flat-surface check. Set the glasses on a flat table. The frame should rest evenly, with both temple tips touching and no rocking. If one tip lifts, that side is out of line.

2.  Mirror check. Put them on and look straight at a mirror. Ears are often slightly uneven, so what looks crooked on the table may be correct for your face. Go by how they sit on you.

To raise the side that sits lower, gently bend that side's temple end down a little. To lower a side that sits too high, ease its temple end up a little. Adjust, check, and repeat. On acetate models, warm the temple end first. On metal models, see section 7.

Why small changes matter The way a frame sits affects where you look through the lens. If you wear progressive or anti-fatigue lenses, a slipping or crooked frame can make the reading area harder to find. If your vision seems different after an adjustment, let us know.

 

On our metal models, the frame front and the temple arms are metal, and the end of each temple is covered by a smooth acetate tip. That means two different materials in one temple, and each needs a different touch.

Step 1: Tighten the hinge screw

Start with section 4. A loose hinge is the most common cause of a wobbly or crooked metal frame, and tightening it often fixes the problem on its own.

Step 2: Adjust the temple tip (the acetate end)

The tip is where most fit problems on metal models are solved, because it controls how the glasses grip behind your ears.

1.  Dip only the acetate tip into hot (not boiling) tap water for about 30 to 60 seconds. Keep the lenses, the frame front, and the hinge out of the water.

2.  Dry the tip and check with your fingertip that it feels warm, not hot.

3.  Support the temple with one finger just in front of the tip and move the curved end a few millimeters. You are shaping the tip and the thin metal inside it together.

4.  Hold the new shape for about half a minute while it cools, then try the glasses on.

●      Slipping down: press the tip slightly down and a touch inward.

●      Pressure behind the ears: ease the tip slightly up and a touch outward.

●      Don't bend right at the joint where the metal meets the acetate. Bending there can loosen the tip or leave a kink. Make the change on the curved part of the tip instead.

Step 3: Small changes to the metal arm

If the sides of your head feel squeezed or the glasses feel loose at the temples even after adjusting the tips, you can try a very small change to the metal arm. Hold the arm near the hinge with one hand and use the other to nudge it by a millimeter or two, either slightly outward to relieve squeezing, or slightly inward if the arms feel too loose. Metal needs no heat, but it is thin and springy, so push gently and check often. If it will not move easily, stop. Repeated bending weakens metal at the same spot.

Step 4: Adjust the nose pads

If your frame has adjustable pads, hold the bridge steady and move one pad at a time with your thumb and finger, then compare the two sides.

●      Glasses slip down or sit too low: move the pads slightly closer together.

●      Pinching or sitting too high: spread them slightly apart.

●      Move the pads equally on both sides, and don't twist the thin pad arms back and forth. Metal weakens when bent repeatedly.

●      If a pad is cracked, yellowed, or has fallen off, email us. Don't try to glue it.

●      Don't use boiling water, a hair dryer, or any strong heat. Lens coatings can crack, and the frame can warp.

●      Don't bend a cold acetate frame or a cold acetate tip. Warm it first.

●      Don't bend metal models at the joint where the metal meets the acetate tip.

●      Don't make big bends. A few millimeters at a time is enough.

●      Don't bend the glasses while wearing them. You can't control the force, and you could hurt yourself.

●      Don't use kitchen tools or pliers. They can scratch or snap the frame.

●      Don't over-tighten screws. Snug is enough.

●      Don't keep working on one spot. Repeated bending weakens both metal and acetate.

●      Don't dip the whole frame. Warm water is for acetate parts only, and the lenses and hinge should stay dry.

Home adjustment is for small fit problems. Stop and get help if:

●      A screw is missing or stripped

●      The frame is cracked, or the acetate shows white stress lines

●      A lens is loose or a rim has opened

●      The metal is too stiff to move without force, or the acetate tip has loosened or shifted at the joint

●      You adjusted several times and it still doesn't fit

●      The glasses feel comfortable but your vision seems different, or headaches continue (see our guide on headaches and glasses)

An optician can check the fit with proper tools, and many will look at a pair for little or nothing. You can also email hello@aldermiller.com with your order number, a photo of the glasses from the front and side, and a description of where they press or slip. We'll point you in the right direction.

●      Tighten hinge screws first, clockwise, until snug

●      Acetate models: warm only the temple end in hot (not boiling) water, keeping lenses dry

●      Metal models: shape the acetate tip after warming it, nudge the metal arm by hand only a millimeter or two, and never bend at the joint

●      Slipping: temple ends slightly down, pads slightly closer

●      Pressure: temple ends slightly up, pads slightly apart

●      Check on a flat table and in a mirror after each small change

●      Stop if something resists, cracks, or comes loose